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f078f20970
This adds the new mac80211 11n ath9k Atheros driver. Only STA support is currently enabled and tested. Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: Jack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com> Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: Pavel Roskin <proski@gnu.org> Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
437 lines
11 KiB
C
437 lines
11 KiB
C
/*
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* Copyright (c) 2008 Atheros Communications Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "core.h"
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#include "hw.h"
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#include "reg.h"
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#include "phy.h"
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void
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ath9k_hw_write_regs(struct ath_hal *ah, u32 modesIndex, u32 freqIndex,
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int regWrites)
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{
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struct ath_hal_5416 *ahp = AH5416(ah);
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REG_WRITE_ARRAY(&ahp->ah_iniBB_RfGain, freqIndex, regWrites);
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}
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bool
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ath9k_hw_set_channel(struct ath_hal *ah, struct ath9k_channel *chan)
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{
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u32 channelSel = 0;
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u32 bModeSynth = 0;
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u32 aModeRefSel = 0;
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u32 reg32 = 0;
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u16 freq;
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struct chan_centers centers;
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ath9k_hw_get_channel_centers(ah, chan, ¢ers);
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freq = centers.synth_center;
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if (freq < 4800) {
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u32 txctl;
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if (((freq - 2192) % 5) == 0) {
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channelSel = ((freq - 672) * 2 - 3040) / 10;
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bModeSynth = 0;
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} else if (((freq - 2224) % 5) == 0) {
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channelSel = ((freq - 704) * 2 - 3040) / 10;
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bModeSynth = 1;
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} else {
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DPRINTF(ah->ah_sc, ATH_DBG_CHANNEL,
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"%s: invalid channel %u MHz\n", __func__,
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freq);
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return false;
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}
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channelSel = (channelSel << 2) & 0xff;
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channelSel = ath9k_hw_reverse_bits(channelSel, 8);
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txctl = REG_READ(ah, AR_PHY_CCK_TX_CTRL);
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if (freq == 2484) {
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REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
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txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
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} else {
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REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
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txctl & ~AR_PHY_CCK_TX_CTRL_JAPAN);
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}
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} else if ((freq % 20) == 0 && freq >= 5120) {
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channelSel =
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ath9k_hw_reverse_bits(((freq - 4800) / 20 << 2), 8);
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aModeRefSel = ath9k_hw_reverse_bits(1, 2);
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} else if ((freq % 10) == 0) {
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channelSel =
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ath9k_hw_reverse_bits(((freq - 4800) / 10 << 1), 8);
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if (AR_SREV_9100(ah) || AR_SREV_9160_10_OR_LATER(ah))
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aModeRefSel = ath9k_hw_reverse_bits(2, 2);
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else
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aModeRefSel = ath9k_hw_reverse_bits(1, 2);
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} else if ((freq % 5) == 0) {
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channelSel = ath9k_hw_reverse_bits((freq - 4800) / 5, 8);
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aModeRefSel = ath9k_hw_reverse_bits(1, 2);
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} else {
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DPRINTF(ah->ah_sc, ATH_DBG_CHANNEL,
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"%s: invalid channel %u MHz\n", __func__, freq);
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return false;
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}
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reg32 =
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(channelSel << 8) | (aModeRefSel << 2) | (bModeSynth << 1) |
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(1 << 5) | 0x1;
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REG_WRITE(ah, AR_PHY(0x37), reg32);
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ah->ah_curchan = chan;
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AH5416(ah)->ah_curchanRadIndex = -1;
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return true;
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}
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bool
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ath9k_hw_ar9280_set_channel(struct ath_hal *ah,
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struct ath9k_channel *chan)
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{
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u16 bMode, fracMode, aModeRefSel = 0;
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u32 freq, ndiv, channelSel = 0, channelFrac = 0, reg32 = 0;
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struct chan_centers centers;
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u32 refDivA = 24;
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ath9k_hw_get_channel_centers(ah, chan, ¢ers);
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freq = centers.synth_center;
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reg32 = REG_READ(ah, AR_PHY_SYNTH_CONTROL);
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reg32 &= 0xc0000000;
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if (freq < 4800) {
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u32 txctl;
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bMode = 1;
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fracMode = 1;
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aModeRefSel = 0;
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channelSel = (freq * 0x10000) / 15;
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txctl = REG_READ(ah, AR_PHY_CCK_TX_CTRL);
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if (freq == 2484) {
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REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
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txctl | AR_PHY_CCK_TX_CTRL_JAPAN);
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} else {
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REG_WRITE(ah, AR_PHY_CCK_TX_CTRL,
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txctl & ~AR_PHY_CCK_TX_CTRL_JAPAN);
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}
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} else {
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bMode = 0;
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fracMode = 0;
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if ((freq % 20) == 0) {
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aModeRefSel = 3;
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} else if ((freq % 10) == 0) {
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aModeRefSel = 2;
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} else {
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aModeRefSel = 0;
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fracMode = 1;
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refDivA = 1;
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channelSel = (freq * 0x8000) / 15;
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REG_RMW_FIELD(ah, AR_AN_SYNTH9,
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AR_AN_SYNTH9_REFDIVA, refDivA);
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}
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if (!fracMode) {
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ndiv = (freq * (refDivA >> aModeRefSel)) / 60;
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channelSel = ndiv & 0x1ff;
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channelFrac = (ndiv & 0xfffffe00) * 2;
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channelSel = (channelSel << 17) | channelFrac;
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}
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}
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reg32 = reg32 |
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(bMode << 29) |
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(fracMode << 28) | (aModeRefSel << 26) | (channelSel);
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REG_WRITE(ah, AR_PHY_SYNTH_CONTROL, reg32);
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ah->ah_curchan = chan;
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AH5416(ah)->ah_curchanRadIndex = -1;
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return true;
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}
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static void
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ath9k_phy_modify_rx_buffer(u32 *rfBuf, u32 reg32,
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u32 numBits, u32 firstBit,
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u32 column)
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{
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u32 tmp32, mask, arrayEntry, lastBit;
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int32_t bitPosition, bitsLeft;
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tmp32 = ath9k_hw_reverse_bits(reg32, numBits);
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arrayEntry = (firstBit - 1) / 8;
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bitPosition = (firstBit - 1) % 8;
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bitsLeft = numBits;
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while (bitsLeft > 0) {
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lastBit = (bitPosition + bitsLeft > 8) ?
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8 : bitPosition + bitsLeft;
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mask = (((1 << lastBit) - 1) ^ ((1 << bitPosition) - 1)) <<
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(column * 8);
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rfBuf[arrayEntry] &= ~mask;
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rfBuf[arrayEntry] |= ((tmp32 << bitPosition) <<
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(column * 8)) & mask;
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bitsLeft -= 8 - bitPosition;
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tmp32 = tmp32 >> (8 - bitPosition);
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bitPosition = 0;
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arrayEntry++;
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}
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}
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bool
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ath9k_hw_set_rf_regs(struct ath_hal *ah, struct ath9k_channel *chan,
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u16 modesIndex)
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{
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struct ath_hal_5416 *ahp = AH5416(ah);
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u32 eepMinorRev;
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u32 ob5GHz = 0, db5GHz = 0;
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u32 ob2GHz = 0, db2GHz = 0;
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int regWrites = 0;
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if (AR_SREV_9280_10_OR_LATER(ah))
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return true;
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eepMinorRev = ath9k_hw_get_eeprom(ahp, EEP_MINOR_REV);
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RF_BANK_SETUP(ahp->ah_analogBank0Data, &ahp->ah_iniBank0, 1);
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RF_BANK_SETUP(ahp->ah_analogBank1Data, &ahp->ah_iniBank1, 1);
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RF_BANK_SETUP(ahp->ah_analogBank2Data, &ahp->ah_iniBank2, 1);
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RF_BANK_SETUP(ahp->ah_analogBank3Data, &ahp->ah_iniBank3,
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modesIndex);
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{
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int i;
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for (i = 0; i < ahp->ah_iniBank6TPC.ia_rows; i++) {
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ahp->ah_analogBank6Data[i] =
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INI_RA(&ahp->ah_iniBank6TPC, i, modesIndex);
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}
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}
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if (eepMinorRev >= 2) {
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if (IS_CHAN_2GHZ(chan)) {
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ob2GHz = ath9k_hw_get_eeprom(ahp, EEP_OB_2);
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db2GHz = ath9k_hw_get_eeprom(ahp, EEP_DB_2);
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ath9k_phy_modify_rx_buffer(ahp->ah_analogBank6Data,
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ob2GHz, 3, 197, 0);
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ath9k_phy_modify_rx_buffer(ahp->ah_analogBank6Data,
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db2GHz, 3, 194, 0);
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} else {
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ob5GHz = ath9k_hw_get_eeprom(ahp, EEP_OB_5);
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db5GHz = ath9k_hw_get_eeprom(ahp, EEP_DB_5);
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ath9k_phy_modify_rx_buffer(ahp->ah_analogBank6Data,
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ob5GHz, 3, 203, 0);
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ath9k_phy_modify_rx_buffer(ahp->ah_analogBank6Data,
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db5GHz, 3, 200, 0);
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}
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}
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RF_BANK_SETUP(ahp->ah_analogBank7Data, &ahp->ah_iniBank7, 1);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank0, ahp->ah_analogBank0Data,
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regWrites);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank1, ahp->ah_analogBank1Data,
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regWrites);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank2, ahp->ah_analogBank2Data,
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regWrites);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank3, ahp->ah_analogBank3Data,
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regWrites);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank6TPC, ahp->ah_analogBank6Data,
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regWrites);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank7, ahp->ah_analogBank7Data,
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regWrites);
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return true;
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}
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void
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ath9k_hw_rfdetach(struct ath_hal *ah)
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{
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struct ath_hal_5416 *ahp = AH5416(ah);
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if (ahp->ah_analogBank0Data != NULL) {
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kfree(ahp->ah_analogBank0Data);
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ahp->ah_analogBank0Data = NULL;
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}
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if (ahp->ah_analogBank1Data != NULL) {
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kfree(ahp->ah_analogBank1Data);
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ahp->ah_analogBank1Data = NULL;
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}
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if (ahp->ah_analogBank2Data != NULL) {
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kfree(ahp->ah_analogBank2Data);
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ahp->ah_analogBank2Data = NULL;
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}
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if (ahp->ah_analogBank3Data != NULL) {
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kfree(ahp->ah_analogBank3Data);
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ahp->ah_analogBank3Data = NULL;
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}
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if (ahp->ah_analogBank6Data != NULL) {
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kfree(ahp->ah_analogBank6Data);
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ahp->ah_analogBank6Data = NULL;
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}
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if (ahp->ah_analogBank6TPCData != NULL) {
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kfree(ahp->ah_analogBank6TPCData);
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ahp->ah_analogBank6TPCData = NULL;
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}
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if (ahp->ah_analogBank7Data != NULL) {
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kfree(ahp->ah_analogBank7Data);
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ahp->ah_analogBank7Data = NULL;
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}
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if (ahp->ah_addac5416_21 != NULL) {
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kfree(ahp->ah_addac5416_21);
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ahp->ah_addac5416_21 = NULL;
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}
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if (ahp->ah_bank6Temp != NULL) {
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kfree(ahp->ah_bank6Temp);
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ahp->ah_bank6Temp = NULL;
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}
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}
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bool ath9k_hw_init_rf(struct ath_hal *ah, int *status)
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{
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struct ath_hal_5416 *ahp = AH5416(ah);
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if (!AR_SREV_9280_10_OR_LATER(ah)) {
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ahp->ah_analogBank0Data =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank0.ia_rows), GFP_KERNEL);
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ahp->ah_analogBank1Data =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank1.ia_rows), GFP_KERNEL);
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ahp->ah_analogBank2Data =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank2.ia_rows), GFP_KERNEL);
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ahp->ah_analogBank3Data =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank3.ia_rows), GFP_KERNEL);
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ahp->ah_analogBank6Data =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank6.ia_rows), GFP_KERNEL);
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ahp->ah_analogBank6TPCData =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank6TPC.ia_rows), GFP_KERNEL);
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ahp->ah_analogBank7Data =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank7.ia_rows), GFP_KERNEL);
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if (ahp->ah_analogBank0Data == NULL
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|| ahp->ah_analogBank1Data == NULL
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|| ahp->ah_analogBank2Data == NULL
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|| ahp->ah_analogBank3Data == NULL
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|| ahp->ah_analogBank6Data == NULL
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|| ahp->ah_analogBank6TPCData == NULL
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|| ahp->ah_analogBank7Data == NULL) {
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DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
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"%s: cannot allocate RF banks\n",
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__func__);
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*status = -ENOMEM;
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return false;
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}
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ahp->ah_addac5416_21 =
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kzalloc((sizeof(u32) *
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ahp->ah_iniAddac.ia_rows *
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ahp->ah_iniAddac.ia_columns), GFP_KERNEL);
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if (ahp->ah_addac5416_21 == NULL) {
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DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
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"%s: cannot allocate ah_addac5416_21\n",
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__func__);
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*status = -ENOMEM;
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return false;
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}
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ahp->ah_bank6Temp =
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kzalloc((sizeof(u32) *
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ahp->ah_iniBank6.ia_rows), GFP_KERNEL);
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if (ahp->ah_bank6Temp == NULL) {
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DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
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"%s: cannot allocate ah_bank6Temp\n",
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__func__);
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*status = -ENOMEM;
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return false;
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}
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}
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return true;
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}
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void
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ath9k_hw_decrease_chain_power(struct ath_hal *ah, struct ath9k_channel *chan)
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{
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int i, regWrites = 0;
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struct ath_hal_5416 *ahp = AH5416(ah);
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u32 bank6SelMask;
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u32 *bank6Temp = ahp->ah_bank6Temp;
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switch (ahp->ah_diversityControl) {
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case ATH9K_ANT_FIXED_A:
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bank6SelMask =
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(ahp->
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ah_antennaSwitchSwap & ANTSWAP_AB) ? REDUCE_CHAIN_0 :
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REDUCE_CHAIN_1;
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break;
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case ATH9K_ANT_FIXED_B:
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bank6SelMask =
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(ahp->
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ah_antennaSwitchSwap & ANTSWAP_AB) ? REDUCE_CHAIN_1 :
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REDUCE_CHAIN_0;
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break;
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case ATH9K_ANT_VARIABLE:
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return;
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break;
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default:
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return;
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break;
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}
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for (i = 0; i < ahp->ah_iniBank6.ia_rows; i++)
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bank6Temp[i] = ahp->ah_analogBank6Data[i];
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REG_WRITE(ah, AR_PHY_BASE + 0xD8, bank6SelMask);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 189, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 190, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 191, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 192, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 193, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 222, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 245, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 246, 0);
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ath9k_phy_modify_rx_buffer(bank6Temp, 1, 1, 247, 0);
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REG_WRITE_RF_ARRAY(&ahp->ah_iniBank6, bank6Temp, regWrites);
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REG_WRITE(ah, AR_PHY_BASE + 0xD8, 0x00000053);
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#ifdef ALTER_SWITCH
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REG_WRITE(ah, PHY_SWITCH_CHAIN_0,
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(REG_READ(ah, PHY_SWITCH_CHAIN_0) & ~0x38)
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| ((REG_READ(ah, PHY_SWITCH_CHAIN_0) >> 3) & 0x38));
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#endif
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}
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