diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_paprd.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_paprd.c | 358 |
1 files changed, 285 insertions, 73 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c index 356d2fd7882..6343cc91953 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010 Atheros Communications Inc. + * Copyright (c) 2010-2011 Atheros Communications Inc. * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -14,23 +14,47 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include <linux/export.h> #include "hw.h" #include "ar9003_phy.h" void ar9003_paprd_enable(struct ath_hw *ah, bool val) { - struct ath_regulatory *regulatory = ath9k_hw_regulatory(ah); struct ath9k_channel *chan = ah->curchan; + struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; + + /* + * 3 bits for modalHeader5G.papdRateMaskHt20 + * is used for sub-band disabling of PAPRD. + * 5G band is divided into 3 sub-bands -- upper, + * middle, lower. + * if bit 30 of modalHeader5G.papdRateMaskHt20 is set + * -- disable PAPRD for upper band 5GHz + * if bit 29 of modalHeader5G.papdRateMaskHt20 is set + * -- disable PAPRD for middle band 5GHz + * if bit 28 of modalHeader5G.papdRateMaskHt20 is set + * -- disable PAPRD for lower band 5GHz + */ + + if (IS_CHAN_5GHZ(chan)) { + if (chan->channel >= UPPER_5G_SUB_BAND_START) { + if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20) + & BIT(30)) + val = false; + } else if (chan->channel >= MID_5G_SUB_BAND_START) { + if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20) + & BIT(29)) + val = false; + } else { + if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20) + & BIT(28)) + val = false; + } + } if (val) { ah->paprd_table_write_done = true; - - ah->eep_ops->set_txpower(ah, chan, - ath9k_regd_get_ctl(regulatory, chan), - chan->chan->max_antenna_gain * 2, - chan->chan->max_power * 2, - min((u32) MAX_RATE_POWER, - (u32) regulatory->power_limit), false); + ath9k_hw_apply_txpower(ah, chan, false); } REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B0, @@ -46,20 +70,27 @@ EXPORT_SYMBOL(ar9003_paprd_enable); static int ar9003_get_training_power_2g(struct ath_hw *ah) { - struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; - struct ar9300_modal_eep_header *hdr = &eep->modalHeader2G; + struct ath9k_channel *chan = ah->curchan; unsigned int power, scale, delta; - scale = MS(le32_to_cpu(hdr->papdRateMaskHt20), AR9300_PAPRD_SCALE_1); - power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5, - AR_PHY_POWERTX_RATE5_POWERTXHT20_0); + scale = ar9003_get_paprd_scale_factor(ah, chan); - delta = abs((int) ah->paprd_target_power - (int) power); - if (delta > scale) - return -1; + if (AR_SREV_9330(ah) || AR_SREV_9340(ah) || + AR_SREV_9462(ah) || AR_SREV_9565(ah)) { + power = ah->paprd_target_power + 2; + } else if (AR_SREV_9485(ah)) { + power = 25; + } else { + power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5, + AR_PHY_POWERTX_RATE5_POWERTXHT20_0); - if (delta < 4) - power -= 4 - delta; + delta = abs((int) ah->paprd_target_power - (int) power); + if (delta > scale) + return -1; + + if (delta < 4) + power -= 4 - delta; + } return power; } @@ -67,20 +98,10 @@ static int ar9003_get_training_power_2g(struct ath_hw *ah) static int ar9003_get_training_power_5g(struct ath_hw *ah) { struct ath_common *common = ath9k_hw_common(ah); - struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; - struct ar9300_modal_eep_header *hdr = &eep->modalHeader5G; struct ath9k_channel *chan = ah->curchan; unsigned int power, scale, delta; - if (chan->channel >= 5700) - scale = MS(le32_to_cpu(hdr->papdRateMaskHt20), - AR9300_PAPRD_SCALE_1); - else if (chan->channel >= 5400) - scale = MS(le32_to_cpu(hdr->papdRateMaskHt40), - AR9300_PAPRD_SCALE_2); - else - scale = MS(le32_to_cpu(hdr->papdRateMaskHt40), - AR9300_PAPRD_SCALE_1); + scale = ar9003_get_paprd_scale_factor(ah, chan); if (IS_CHAN_HT40(chan)) power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE8, @@ -94,7 +115,23 @@ static int ar9003_get_training_power_5g(struct ath_hw *ah) if (delta > scale) return -1; - power += 2 * get_streams(common->tx_chainmask); + switch (get_streams(ah->txchainmask)) { + case 1: + delta = 6; + break; + case 2: + delta = 4; + break; + case 3: + delta = 2; + break; + default: + delta = 0; + ath_dbg(common, CALIBRATE, "Invalid tx-chainmask: %u\n", + ah->txchainmask); + } + + power += delta; return power; } @@ -112,30 +149,37 @@ static int ar9003_paprd_setup_single_table(struct ath_hw *ah) AR_PHY_PAPRD_CTRL1_B2 }; int training_power; - int i; + int i, val; + u32 am2pm_mask = ah->paprd_ratemask; if (IS_CHAN_2GHZ(ah->curchan)) training_power = ar9003_get_training_power_2g(ah); else training_power = ar9003_get_training_power_5g(ah); + ath_dbg(common, CALIBRATE, "Training power: %d, Target power: %d\n", + training_power, ah->paprd_target_power); + if (training_power < 0) { - ath_dbg(common, ATH_DBG_CALIBRATE, - "PAPRD target power delta out of range"); + ath_dbg(common, CALIBRATE, + "PAPRD target power delta out of range\n"); return -ERANGE; } ah->paprd_training_power = training_power; - ath_dbg(common, ATH_DBG_CALIBRATE, - "Training power: %d, Target power: %d\n", - ah->paprd_training_power, ah->paprd_target_power); + + if (AR_SREV_9330(ah)) + am2pm_mask = 0; REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, ah->paprd_ratemask); REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, - ah->paprd_ratemask); + am2pm_mask); REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK, ah->paprd_ratemask_ht40); + ath_dbg(common, CALIBRATE, "PAPRD HT20 mask: 0x%x, HT40 mask: 0x%x\n", + ah->paprd_ratemask, ah->paprd_ratemask_ht40); + for (i = 0; i < ah->caps.max_txchains; i++) { REG_RMW_FIELD(ah, ctrl0[i], AR_PHY_PAPRD_CTRL0_USE_SINGLE_TABLE_MASK, 1); @@ -171,8 +215,22 @@ static int ar9003_paprd_setup_single_table(struct ath_hw *ah) AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_AGC2_SETTLING, 28); REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, AR_PHY_PAPRD_TRAINER_CNTL1_CF_CF_PAPRD_TRAIN_ENABLE, 1); + + if (AR_SREV_9485(ah)) { + val = 148; + } else { + if (IS_CHAN_2GHZ(ah->curchan)) { + if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) + val = 145; + else + val = 147; + } else { + val = 137; + } + } + REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL2, - AR_PHY_PAPRD_TRAINER_CNTL2_CF_PAPRD_INIT_RX_BB_GAIN, 147); + AR_PHY_PAPRD_TRAINER_CNTL2_CF_PAPRD_INIT_RX_BB_GAIN, val); REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_FINE_CORR_LEN, 4); REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, @@ -181,17 +239,27 @@ static int ar9003_paprd_setup_single_table(struct ath_hw *ah) AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_NUM_CORR_STAGES, 7); REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_MIN_LOOPBACK_DEL, 1); - if (AR_SREV_9485(ah)) + + if (AR_SREV_9485(ah) || + AR_SREV_9462(ah) || + AR_SREV_9565(ah) || + AR_SREV_9550(ah) || + AR_SREV_9330(ah) || + AR_SREV_9340(ah)) REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, - AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, - -3); + AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, -3); else REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, - AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, - -6); + AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, -6); + + val = -10; + + if (IS_CHAN_2GHZ(ah->curchan) && !AR_SREV_9462(ah) && !AR_SREV_9565(ah)) + val = -15; + REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_ADC_DESIRED_SIZE, - -15); + val); REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_BBTXMIX_DISABLE, 1); REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4, @@ -227,10 +295,7 @@ static void ar9003_paprd_get_gain_table(struct ath_hw *ah) u32 reg = AR_PHY_TXGAIN_TABLE; int i; - memset(entry, 0, sizeof(ah->paprd_gain_table_entries)); - memset(index, 0, sizeof(ah->paprd_gain_table_index)); - - for (i = 0; i < 32; i++) { + for (i = 0; i < PAPRD_GAIN_TABLE_ENTRIES; i++) { entry[i] = REG_READ(ah, reg); index[i] = (entry[i] >> 24) & 0xff; reg += 4; @@ -240,13 +305,13 @@ static void ar9003_paprd_get_gain_table(struct ath_hw *ah) static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain, int target_power) { - int olpc_gain_delta = 0; + int olpc_gain_delta = 0, cl_gain_mod; int alpha_therm, alpha_volt; int therm_cal_value, volt_cal_value; int therm_value, volt_value; int thermal_gain_corr, voltage_gain_corr; int desired_scale, desired_gain = 0; - u32 reg; + u32 reg_olpc = 0, reg_cl_gain = 0; REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1, AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); @@ -265,15 +330,29 @@ static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain, volt_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4, AR_PHY_BB_THERM_ADC_4_LATEST_VOLT_VALUE); - if (chain == 0) - reg = AR_PHY_TPC_11_B0; - else if (chain == 1) - reg = AR_PHY_TPC_11_B1; - else - reg = AR_PHY_TPC_11_B2; + switch (chain) { + case 0: + reg_olpc = AR_PHY_TPC_11_B0; + reg_cl_gain = AR_PHY_CL_TAB_0; + break; + case 1: + reg_olpc = AR_PHY_TPC_11_B1; + reg_cl_gain = AR_PHY_CL_TAB_1; + break; + case 2: + reg_olpc = AR_PHY_TPC_11_B2; + reg_cl_gain = AR_PHY_CL_TAB_2; + break; + default: + ath_dbg(ath9k_hw_common(ah), CALIBRATE, + "Invalid chainmask: %d\n", chain); + break; + } - olpc_gain_delta = REG_READ_FIELD(ah, reg, + olpc_gain_delta = REG_READ_FIELD(ah, reg_olpc, AR_PHY_TPC_11_OLPC_GAIN_DELTA); + cl_gain_mod = REG_READ_FIELD(ah, reg_cl_gain, + AR_PHY_CL_TAB_CL_GAIN_MOD); if (olpc_gain_delta >= 128) olpc_gain_delta = olpc_gain_delta - 256; @@ -283,7 +362,7 @@ static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain, voltage_gain_corr = (alpha_volt * (volt_value - volt_cal_value) + (128 / 2)) / 128; desired_gain = target_power - olpc_gain_delta - thermal_gain_corr - - voltage_gain_corr + desired_scale; + voltage_gain_corr + desired_scale + cl_gain_mod; return desired_gain; } @@ -375,6 +454,8 @@ static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain) if (accum_cnt <= thresh_accum_cnt) continue; + max_index++; + /* sum(tx amplitude) */ accum_tx = ((data_L[i] >> 16) & 0xffff) | ((data_U[i] & 0x7ff) << 16); @@ -389,20 +470,21 @@ static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain) accum_tx <<= scale_factor; accum_rx <<= scale_factor; - x_est[i + 1] = (((accum_tx + accum_cnt) / accum_cnt) + 32) >> - scale_factor; + x_est[max_index] = + (((accum_tx + accum_cnt) / accum_cnt) + 32) >> + scale_factor; - Y[i + 1] = ((((accum_rx + accum_cnt) / accum_cnt) + 32) >> + Y[max_index] = + ((((accum_rx + accum_cnt) / accum_cnt) + 32) >> scale_factor) + - (1 << scale_factor) * max_index + 16; + (1 << scale_factor) * i + 16; if (accum_ang >= (1 << 26)) accum_ang -= 1 << 27; - theta[i + 1] = ((accum_ang * (1 << scale_factor)) + accum_cnt) / - accum_cnt; - - max_index++; + theta[max_index] = + ((accum_ang * (1 << scale_factor)) + accum_cnt) / + accum_cnt; } /* @@ -707,13 +789,14 @@ void ar9003_paprd_populate_single_table(struct ath_hw *ah, training_power); if (ah->caps.tx_chainmask & BIT(2)) + /* val AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL correct? */ REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B2, AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL, training_power); } EXPORT_SYMBOL(ar9003_paprd_populate_single_table); -int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain) +void ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain) { unsigned int i, desired_gain, gain_index; unsigned int train_power = ah->paprd_training_power; @@ -721,7 +804,7 @@ int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain) desired_gain = ar9003_get_desired_gain(ah, chain, train_power); gain_index = 0; - for (i = 0; i < 32; i++) { + for (i = 0; i < PAPRD_GAIN_TABLE_ENTRIES; i++) { if (ah->paprd_gain_table_index[i] >= desired_gain) break; gain_index++; @@ -731,11 +814,105 @@ int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain) REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1, AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); - - return 0; } EXPORT_SYMBOL(ar9003_paprd_setup_gain_table); +static bool ar9003_paprd_retrain_pa_in(struct ath_hw *ah, + struct ath9k_hw_cal_data *caldata, + int chain) +{ + u32 *pa_in = caldata->pa_table[chain]; + int capdiv_offset, quick_drop_offset; + int capdiv2g, quick_drop; + int count = 0; + int i; + + if (!AR_SREV_9485(ah) && !AR_SREV_9330(ah)) + return false; + + capdiv2g = REG_READ_FIELD(ah, AR_PHY_65NM_CH0_TXRF3, + AR_PHY_65NM_CH0_TXRF3_CAPDIV2G); + + quick_drop = REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, + AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP); + + if (quick_drop) + quick_drop -= 0x40; + + for (i = 0; i < NUM_BIN + 1; i++) { + if (pa_in[i] == 1400) + count++; + } + + if (AR_SREV_9485(ah)) { + if (pa_in[23] < 800) { + capdiv_offset = (int)((1000 - pa_in[23] + 75) / 150); + capdiv2g += capdiv_offset; + if (capdiv2g > 7) { + capdiv2g = 7; + if (pa_in[23] < 600) { + quick_drop++; + if (quick_drop > 0) + quick_drop = 0; + } + } + } else if (pa_in[23] == 1400) { + quick_drop_offset = min_t(int, count / 3, 2); + quick_drop += quick_drop_offset; + capdiv2g += quick_drop_offset / 2; + + if (capdiv2g > 7) + capdiv2g = 7; + + if (quick_drop > 0) { + quick_drop = 0; + capdiv2g -= quick_drop_offset; + if (capdiv2g < 0) + capdiv2g = 0; + } + } else { + return false; + } + } else if (AR_SREV_9330(ah)) { + if (pa_in[23] < 1000) { + capdiv_offset = (1000 - pa_in[23]) / 100; + capdiv2g += capdiv_offset; + if (capdiv_offset > 3) { + capdiv_offset = 1; + quick_drop--; + } + + capdiv2g += capdiv_offset; + if (capdiv2g > 6) + capdiv2g = 6; + if (quick_drop < -4) + quick_drop = -4; + } else if (pa_in[23] == 1400) { + if (count > 3) { + quick_drop++; + capdiv2g -= count / 4; + if (quick_drop > -2) + quick_drop = -2; + } else { + capdiv2g--; + } + + if (capdiv2g < 0) + capdiv2g = 0; + } else { + return false; + } + } + + REG_RMW_FIELD(ah, AR_PHY_65NM_CH0_TXRF3, + AR_PHY_65NM_CH0_TXRF3_CAPDIV2G, capdiv2g); + REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, + AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, + quick_drop); + + return true; +} + int ar9003_paprd_create_curve(struct ath_hw *ah, struct ath9k_hw_cal_data *caldata, int chain) { @@ -748,7 +925,7 @@ int ar9003_paprd_create_curve(struct ath_hw *ah, memset(caldata->pa_table[chain], 0, sizeof(caldata->pa_table[chain])); - buf = kmalloc(2 * 48 * sizeof(u32), GFP_ATOMIC); + buf = kmalloc(2 * 48 * sizeof(u32), GFP_KERNEL); if (!buf) return -ENOMEM; @@ -771,6 +948,9 @@ int ar9003_paprd_create_curve(struct ath_hw *ah, if (!create_pa_curve(data_L, data_U, pa_table, small_signal_gain)) status = -2; + if (ar9003_paprd_retrain_pa_in(ah, caldata, chain)) + status = -EINPROGRESS; + REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1, AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); @@ -795,7 +975,39 @@ EXPORT_SYMBOL(ar9003_paprd_init_table); bool ar9003_paprd_is_done(struct ath_hw *ah) { - return !!REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_STAT1, + int paprd_done, agc2_pwr; + + paprd_done = REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_STAT1, AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); + + if (AR_SREV_9485(ah)) + goto exit; + + if (paprd_done == 0x1) { + agc2_pwr = REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_STAT1, + AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_AGC2_PWR); + + ath_dbg(ath9k_hw_common(ah), CALIBRATE, + "AGC2_PWR = 0x%x training done = 0x%x\n", + agc2_pwr, paprd_done); + /* + * agc2_pwr range should not be less than 'IDEAL_AGC2_PWR_CHANGE' + * when the training is completely done, otherwise retraining is + * done to make sure the value is in ideal range + */ + if (agc2_pwr <= PAPRD_IDEAL_AGC2_PWR_RANGE) + paprd_done = 0; + } +exit: + return !!paprd_done; } EXPORT_SYMBOL(ar9003_paprd_is_done); + +bool ar9003_is_paprd_enabled(struct ath_hw *ah) +{ + if ((ah->caps.hw_caps & ATH9K_HW_CAP_PAPRD) && ah->config.enable_paprd) + return true; + + return false; +} +EXPORT_SYMBOL(ar9003_is_paprd_enabled); |