Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 1 | /* |
Sujith Manoharan | 5b68138 | 2011-05-17 13:36:18 +0530 | [diff] [blame] | 2 | * Copyright (c) 2010-2011 Atheros Communications Inc. |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 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 | |
Paul Gortmaker | ee40fa0 | 2011-05-27 16:14:23 -0400 | [diff] [blame] | 17 | #include <linux/export.h> |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 18 | #include "hw.h" |
| 19 | #include "ar9003_phy.h" |
| 20 | |
| 21 | void ar9003_paprd_enable(struct ath_hw *ah, bool val) |
| 22 | { |
Vasanthakumar Thiagarajan | 45ef6a0b | 2010-12-15 07:30:53 -0800 | [diff] [blame] | 23 | struct ath9k_channel *chan = ah->curchan; |
Mohammed Shafi Shajakhan | 331c5ea | 2011-07-08 13:01:32 +0530 | [diff] [blame] | 24 | struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep; |
| 25 | |
| 26 | /* |
| 27 | * 3 bits for modalHeader5G.papdRateMaskHt20 |
| 28 | * is used for sub-band disabling of PAPRD. |
| 29 | * 5G band is divided into 3 sub-bands -- upper, |
| 30 | * middle, lower. |
| 31 | * if bit 30 of modalHeader5G.papdRateMaskHt20 is set |
| 32 | * -- disable PAPRD for upper band 5GHz |
| 33 | * if bit 29 of modalHeader5G.papdRateMaskHt20 is set |
| 34 | * -- disable PAPRD for middle band 5GHz |
| 35 | * if bit 28 of modalHeader5G.papdRateMaskHt20 is set |
| 36 | * -- disable PAPRD for lower band 5GHz |
| 37 | */ |
| 38 | |
| 39 | if (IS_CHAN_5GHZ(chan)) { |
| 40 | if (chan->channel >= UPPER_5G_SUB_BAND_START) { |
| 41 | if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20) |
| 42 | & BIT(30)) |
| 43 | val = false; |
| 44 | } else if (chan->channel >= MID_5G_SUB_BAND_START) { |
| 45 | if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20) |
| 46 | & BIT(29)) |
| 47 | val = false; |
| 48 | } else { |
| 49 | if (le32_to_cpu(eep->modalHeader5G.papdRateMaskHt20) |
| 50 | & BIT(28)) |
| 51 | val = false; |
| 52 | } |
| 53 | } |
Vasanthakumar Thiagarajan | 45ef6a0b | 2010-12-15 07:30:53 -0800 | [diff] [blame] | 54 | |
| 55 | if (val) { |
| 56 | ah->paprd_table_write_done = true; |
Gabor Juhos | 64ea57d | 2012-04-15 20:38:05 +0200 | [diff] [blame] | 57 | ath9k_hw_apply_txpower(ah, chan, false); |
Vasanthakumar Thiagarajan | 45ef6a0b | 2010-12-15 07:30:53 -0800 | [diff] [blame] | 58 | } |
| 59 | |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 60 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B0, |
| 61 | AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val); |
Vasanthakumar Thiagarajan | 11441fb | 2010-12-06 04:27:58 -0800 | [diff] [blame] | 62 | if (ah->caps.tx_chainmask & BIT(1)) |
| 63 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B1, |
| 64 | AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val); |
| 65 | if (ah->caps.tx_chainmask & BIT(2)) |
| 66 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B2, |
| 67 | AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 68 | } |
| 69 | EXPORT_SYMBOL(ar9003_paprd_enable); |
| 70 | |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 71 | static int ar9003_get_training_power_2g(struct ath_hw *ah) |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 72 | { |
Mohammed Shafi Shajakhan | 931749b | 2011-06-06 23:02:33 +0530 | [diff] [blame] | 73 | struct ath9k_channel *chan = ah->curchan; |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 74 | unsigned int power, scale, delta; |
| 75 | |
Mohammed Shafi Shajakhan | 931749b | 2011-06-06 23:02:33 +0530 | [diff] [blame] | 76 | scale = ar9003_get_paprd_scale_factor(ah, chan); |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 77 | power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5, |
| 78 | AR_PHY_POWERTX_RATE5_POWERTXHT20_0); |
| 79 | |
| 80 | delta = abs((int) ah->paprd_target_power - (int) power); |
| 81 | if (delta > scale) |
| 82 | return -1; |
| 83 | |
| 84 | if (delta < 4) |
| 85 | power -= 4 - delta; |
| 86 | |
| 87 | return power; |
| 88 | } |
| 89 | |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 90 | static int ar9003_get_training_power_5g(struct ath_hw *ah) |
| 91 | { |
| 92 | struct ath_common *common = ath9k_hw_common(ah); |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 93 | struct ath9k_channel *chan = ah->curchan; |
| 94 | unsigned int power, scale, delta; |
| 95 | |
Mohammed Shafi Shajakhan | 931749b | 2011-06-06 23:02:33 +0530 | [diff] [blame] | 96 | scale = ar9003_get_paprd_scale_factor(ah, chan); |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 97 | |
| 98 | if (IS_CHAN_HT40(chan)) |
| 99 | power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE8, |
| 100 | AR_PHY_POWERTX_RATE8_POWERTXHT40_5); |
| 101 | else |
| 102 | power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE6, |
| 103 | AR_PHY_POWERTX_RATE6_POWERTXHT20_5); |
| 104 | |
| 105 | power += scale; |
| 106 | delta = abs((int) ah->paprd_target_power - (int) power); |
| 107 | if (delta > scale) |
| 108 | return -1; |
| 109 | |
Felix Fietkau | 82b2d33 | 2011-09-03 01:40:23 +0200 | [diff] [blame] | 110 | switch (get_streams(ah->txchainmask)) { |
Mohammed Shafi Shajakhan | 7952ca5 | 2011-06-21 14:51:46 +0530 | [diff] [blame] | 111 | case 1: |
| 112 | delta = 6; |
| 113 | break; |
| 114 | case 2: |
| 115 | delta = 4; |
| 116 | break; |
| 117 | case 3: |
| 118 | delta = 2; |
| 119 | break; |
| 120 | default: |
| 121 | delta = 0; |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 122 | ath_dbg(common, CALIBRATE, "Invalid tx-chainmask: %u\n", |
| 123 | ah->txchainmask); |
Mohammed Shafi Shajakhan | 7952ca5 | 2011-06-21 14:51:46 +0530 | [diff] [blame] | 124 | } |
| 125 | |
| 126 | power += delta; |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 127 | return power; |
| 128 | } |
| 129 | |
| 130 | static int ar9003_paprd_setup_single_table(struct ath_hw *ah) |
| 131 | { |
| 132 | struct ath_common *common = ath9k_hw_common(ah); |
Joe Perches | 07b2fa5 | 2010-11-20 18:38:53 -0800 | [diff] [blame] | 133 | static const u32 ctrl0[3] = { |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 134 | AR_PHY_PAPRD_CTRL0_B0, |
| 135 | AR_PHY_PAPRD_CTRL0_B1, |
| 136 | AR_PHY_PAPRD_CTRL0_B2 |
| 137 | }; |
Joe Perches | 07b2fa5 | 2010-11-20 18:38:53 -0800 | [diff] [blame] | 138 | static const u32 ctrl1[3] = { |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 139 | AR_PHY_PAPRD_CTRL1_B0, |
| 140 | AR_PHY_PAPRD_CTRL1_B1, |
| 141 | AR_PHY_PAPRD_CTRL1_B2 |
| 142 | }; |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 143 | int training_power; |
Senthil Balasubramanian | 2577c6e | 2011-09-13 22:38:18 +0530 | [diff] [blame] | 144 | int i, val; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 145 | |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 146 | if (IS_CHAN_2GHZ(ah->curchan)) |
| 147 | training_power = ar9003_get_training_power_2g(ah); |
| 148 | else |
| 149 | training_power = ar9003_get_training_power_5g(ah); |
| 150 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 151 | ath_dbg(common, CALIBRATE, "Training power: %d, Target power: %d\n", |
Mohammed Shafi Shajakhan | 8428804 | 2011-05-26 11:41:13 +0530 | [diff] [blame] | 152 | training_power, ah->paprd_target_power); |
| 153 | |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 154 | if (training_power < 0) { |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 155 | ath_dbg(common, CALIBRATE, |
| 156 | "PAPRD target power delta out of range\n"); |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 157 | return -ERANGE; |
| 158 | } |
| 159 | ah->paprd_training_power = training_power; |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 160 | |
Vasanthakumar Thiagarajan | 7072bf6 | 2010-12-15 07:30:52 -0800 | [diff] [blame] | 161 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, |
| 162 | ah->paprd_ratemask); |
| 163 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, |
| 164 | ah->paprd_ratemask); |
| 165 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK, |
Felix Fietkau | f1a8abb | 2010-12-19 00:31:54 +0100 | [diff] [blame] | 166 | ah->paprd_ratemask_ht40); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 167 | |
Vasanthakumar Thiagarajan | 11441fb | 2010-12-06 04:27:58 -0800 | [diff] [blame] | 168 | for (i = 0; i < ah->caps.max_txchains; i++) { |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 169 | REG_RMW_FIELD(ah, ctrl0[i], |
| 170 | AR_PHY_PAPRD_CTRL0_USE_SINGLE_TABLE_MASK, 1); |
| 171 | REG_RMW_FIELD(ah, ctrl1[i], |
| 172 | AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2PM_ENABLE, 1); |
| 173 | REG_RMW_FIELD(ah, ctrl1[i], |
| 174 | AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2AM_ENABLE, 1); |
| 175 | REG_RMW_FIELD(ah, ctrl1[i], |
| 176 | AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA, 0); |
| 177 | REG_RMW_FIELD(ah, ctrl1[i], |
| 178 | AR_PHY_PAPRD_CTRL1_PA_GAIN_SCALE_FACT_MASK, 181); |
| 179 | REG_RMW_FIELD(ah, ctrl1[i], |
| 180 | AR_PHY_PAPRD_CTRL1_PAPRD_MAG_SCALE_FACT, 361); |
| 181 | REG_RMW_FIELD(ah, ctrl1[i], |
| 182 | AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA, 0); |
| 183 | REG_RMW_FIELD(ah, ctrl0[i], |
| 184 | AR_PHY_PAPRD_CTRL0_PAPRD_MAG_THRSH, 3); |
| 185 | } |
| 186 | |
| 187 | ar9003_paprd_enable(ah, false); |
| 188 | |
| 189 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 190 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_SKIP, 0x30); |
| 191 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 192 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_ENABLE, 1); |
| 193 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 194 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_TX_GAIN_FORCE, 1); |
| 195 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 196 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_RX_BB_GAIN_FORCE, 0); |
| 197 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 198 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_IQCORR_ENABLE, 0); |
| 199 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 200 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_AGC2_SETTLING, 28); |
| 201 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1, |
| 202 | AR_PHY_PAPRD_TRAINER_CNTL1_CF_CF_PAPRD_TRAIN_ENABLE, 1); |
Rajkumar Manoharan | 423e38e | 2011-10-13 11:00:44 +0530 | [diff] [blame] | 203 | val = AR_SREV_9462(ah) ? 0x91 : 147; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 204 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL2, |
Senthil Balasubramanian | 2577c6e | 2011-09-13 22:38:18 +0530 | [diff] [blame] | 205 | AR_PHY_PAPRD_TRAINER_CNTL2_CF_PAPRD_INIT_RX_BB_GAIN, val); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 206 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 207 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_FINE_CORR_LEN, 4); |
| 208 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 209 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_COARSE_CORR_LEN, 4); |
| 210 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 211 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_NUM_CORR_STAGES, 7); |
| 212 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 213 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_MIN_LOOPBACK_DEL, 1); |
Rajkumar Manoharan | 423e38e | 2011-10-13 11:00:44 +0530 | [diff] [blame] | 214 | if (AR_SREV_9485(ah) || AR_SREV_9462(ah)) |
Vasanthakumar Thiagarajan | 11441fb | 2010-12-06 04:27:58 -0800 | [diff] [blame] | 215 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 216 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, |
| 217 | -3); |
| 218 | else |
| 219 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 220 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, |
| 221 | -6); |
Rajkumar Manoharan | 423e38e | 2011-10-13 11:00:44 +0530 | [diff] [blame] | 222 | val = AR_SREV_9462(ah) ? -10 : -15; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 223 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 224 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_ADC_DESIRED_SIZE, |
Senthil Balasubramanian | 2577c6e | 2011-09-13 22:38:18 +0530 | [diff] [blame] | 225 | val); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 226 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3, |
| 227 | AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_BBTXMIX_DISABLE, 1); |
| 228 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4, |
| 229 | AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_SAFETY_DELTA, 0); |
| 230 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4, |
| 231 | AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_MIN_CORR, 400); |
| 232 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4, |
| 233 | AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_NUM_TRAIN_SAMPLES, |
| 234 | 100); |
| 235 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_0_B0, |
| 236 | AR_PHY_PAPRD_PRE_POST_SCALING, 261376); |
| 237 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_1_B0, |
| 238 | AR_PHY_PAPRD_PRE_POST_SCALING, 248079); |
| 239 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_2_B0, |
| 240 | AR_PHY_PAPRD_PRE_POST_SCALING, 233759); |
| 241 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_3_B0, |
| 242 | AR_PHY_PAPRD_PRE_POST_SCALING, 220464); |
| 243 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_4_B0, |
| 244 | AR_PHY_PAPRD_PRE_POST_SCALING, 208194); |
| 245 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_5_B0, |
| 246 | AR_PHY_PAPRD_PRE_POST_SCALING, 196949); |
| 247 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_6_B0, |
| 248 | AR_PHY_PAPRD_PRE_POST_SCALING, 185706); |
| 249 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_7_B0, |
| 250 | AR_PHY_PAPRD_PRE_POST_SCALING, 175487); |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 251 | return 0; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | static void ar9003_paprd_get_gain_table(struct ath_hw *ah) |
| 255 | { |
| 256 | u32 *entry = ah->paprd_gain_table_entries; |
| 257 | u8 *index = ah->paprd_gain_table_index; |
| 258 | u32 reg = AR_PHY_TXGAIN_TABLE; |
| 259 | int i; |
| 260 | |
| 261 | memset(entry, 0, sizeof(ah->paprd_gain_table_entries)); |
| 262 | memset(index, 0, sizeof(ah->paprd_gain_table_index)); |
| 263 | |
Mohammed Shafi Shajakhan | 05b60d4 | 2011-06-23 20:14:29 +0530 | [diff] [blame] | 264 | for (i = 0; i < PAPRD_GAIN_TABLE_ENTRIES; i++) { |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 265 | entry[i] = REG_READ(ah, reg); |
| 266 | index[i] = (entry[i] >> 24) & 0xff; |
| 267 | reg += 4; |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain, |
| 272 | int target_power) |
| 273 | { |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 274 | int olpc_gain_delta = 0, cl_gain_mod; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 275 | int alpha_therm, alpha_volt; |
| 276 | int therm_cal_value, volt_cal_value; |
| 277 | int therm_value, volt_value; |
| 278 | int thermal_gain_corr, voltage_gain_corr; |
| 279 | int desired_scale, desired_gain = 0; |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 280 | u32 reg_olpc = 0, reg_cl_gain = 0; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 281 | |
| 282 | REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1, |
| 283 | AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); |
| 284 | desired_scale = REG_READ_FIELD(ah, AR_PHY_TPC_12, |
| 285 | AR_PHY_TPC_12_DESIRED_SCALE_HT40_5); |
| 286 | alpha_therm = REG_READ_FIELD(ah, AR_PHY_TPC_19, |
| 287 | AR_PHY_TPC_19_ALPHA_THERM); |
| 288 | alpha_volt = REG_READ_FIELD(ah, AR_PHY_TPC_19, |
| 289 | AR_PHY_TPC_19_ALPHA_VOLT); |
| 290 | therm_cal_value = REG_READ_FIELD(ah, AR_PHY_TPC_18, |
| 291 | AR_PHY_TPC_18_THERM_CAL_VALUE); |
| 292 | volt_cal_value = REG_READ_FIELD(ah, AR_PHY_TPC_18, |
| 293 | AR_PHY_TPC_18_VOLT_CAL_VALUE); |
| 294 | therm_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4, |
| 295 | AR_PHY_BB_THERM_ADC_4_LATEST_THERM_VALUE); |
| 296 | volt_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4, |
| 297 | AR_PHY_BB_THERM_ADC_4_LATEST_VOLT_VALUE); |
| 298 | |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 299 | switch (chain) { |
| 300 | case 0: |
| 301 | reg_olpc = AR_PHY_TPC_11_B0; |
| 302 | reg_cl_gain = AR_PHY_CL_TAB_0; |
| 303 | break; |
| 304 | case 1: |
| 305 | reg_olpc = AR_PHY_TPC_11_B1; |
| 306 | reg_cl_gain = AR_PHY_CL_TAB_1; |
| 307 | break; |
| 308 | case 2: |
| 309 | reg_olpc = AR_PHY_TPC_11_B2; |
| 310 | reg_cl_gain = AR_PHY_CL_TAB_2; |
| 311 | break; |
| 312 | default: |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 313 | ath_dbg(ath9k_hw_common(ah), CALIBRATE, |
| 314 | "Invalid chainmask: %d\n", chain); |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 315 | break; |
| 316 | } |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 317 | |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 318 | olpc_gain_delta = REG_READ_FIELD(ah, reg_olpc, |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 319 | AR_PHY_TPC_11_OLPC_GAIN_DELTA); |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 320 | cl_gain_mod = REG_READ_FIELD(ah, reg_cl_gain, |
| 321 | AR_PHY_CL_TAB_CL_GAIN_MOD); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 322 | |
| 323 | if (olpc_gain_delta >= 128) |
| 324 | olpc_gain_delta = olpc_gain_delta - 256; |
| 325 | |
| 326 | thermal_gain_corr = (alpha_therm * (therm_value - therm_cal_value) + |
| 327 | (256 / 2)) / 256; |
| 328 | voltage_gain_corr = (alpha_volt * (volt_value - volt_cal_value) + |
| 329 | (128 / 2)) / 128; |
| 330 | desired_gain = target_power - olpc_gain_delta - thermal_gain_corr - |
Mohammed Shafi Shajakhan | f68e20f | 2011-06-23 20:03:38 +0530 | [diff] [blame] | 331 | voltage_gain_corr + desired_scale + cl_gain_mod; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 332 | |
| 333 | return desired_gain; |
| 334 | } |
| 335 | |
| 336 | static void ar9003_tx_force_gain(struct ath_hw *ah, unsigned int gain_index) |
| 337 | { |
| 338 | int selected_gain_entry, txbb1dbgain, txbb6dbgain, txmxrgain; |
| 339 | int padrvgnA, padrvgnB, padrvgnC, padrvgnD; |
| 340 | u32 *gain_table_entries = ah->paprd_gain_table_entries; |
| 341 | |
| 342 | selected_gain_entry = gain_table_entries[gain_index]; |
| 343 | txbb1dbgain = selected_gain_entry & 0x7; |
| 344 | txbb6dbgain = (selected_gain_entry >> 3) & 0x3; |
| 345 | txmxrgain = (selected_gain_entry >> 5) & 0xf; |
| 346 | padrvgnA = (selected_gain_entry >> 9) & 0xf; |
| 347 | padrvgnB = (selected_gain_entry >> 13) & 0xf; |
| 348 | padrvgnC = (selected_gain_entry >> 17) & 0xf; |
| 349 | padrvgnD = (selected_gain_entry >> 21) & 0x3; |
| 350 | |
| 351 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 352 | AR_PHY_TX_FORCED_GAIN_FORCED_TXBB1DBGAIN, txbb1dbgain); |
| 353 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 354 | AR_PHY_TX_FORCED_GAIN_FORCED_TXBB6DBGAIN, txbb6dbgain); |
| 355 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 356 | AR_PHY_TX_FORCED_GAIN_FORCED_TXMXRGAIN, txmxrgain); |
| 357 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 358 | AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNA, padrvgnA); |
| 359 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 360 | AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNB, padrvgnB); |
| 361 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 362 | AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNC, padrvgnC); |
| 363 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 364 | AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGND, padrvgnD); |
| 365 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 366 | AR_PHY_TX_FORCED_GAIN_FORCED_ENABLE_PAL, 0); |
| 367 | REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN, |
| 368 | AR_PHY_TX_FORCED_GAIN_FORCE_TX_GAIN, 0); |
| 369 | REG_RMW_FIELD(ah, AR_PHY_TPC_1, AR_PHY_TPC_1_FORCED_DAC_GAIN, 0); |
| 370 | REG_RMW_FIELD(ah, AR_PHY_TPC_1, AR_PHY_TPC_1_FORCE_DAC_GAIN, 0); |
| 371 | } |
| 372 | |
| 373 | static inline int find_expn(int num) |
| 374 | { |
| 375 | return fls(num) - 1; |
| 376 | } |
| 377 | |
| 378 | static inline int find_proper_scale(int expn, int N) |
| 379 | { |
| 380 | return (expn > N) ? expn - 10 : 0; |
| 381 | } |
| 382 | |
| 383 | #define NUM_BIN 23 |
| 384 | |
| 385 | static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain) |
| 386 | { |
| 387 | unsigned int thresh_accum_cnt; |
| 388 | int x_est[NUM_BIN + 1], Y[NUM_BIN + 1], theta[NUM_BIN + 1]; |
| 389 | int PA_in[NUM_BIN + 1]; |
| 390 | int B1_tmp[NUM_BIN + 1], B2_tmp[NUM_BIN + 1]; |
| 391 | unsigned int B1_abs_max, B2_abs_max; |
| 392 | int max_index, scale_factor; |
| 393 | int y_est[NUM_BIN + 1]; |
| 394 | int x_est_fxp1_nonlin, x_tilde[NUM_BIN + 1]; |
| 395 | unsigned int x_tilde_abs; |
| 396 | int G_fxp, Y_intercept, order_x_by_y, M, I, L, sum_y_sqr, sum_y_quad; |
| 397 | int Q_x, Q_B1, Q_B2, beta_raw, alpha_raw, scale_B; |
| 398 | int Q_scale_B, Q_beta, Q_alpha, alpha, beta, order_1, order_2; |
| 399 | int order1_5x, order2_3x, order1_5x_rem, order2_3x_rem; |
| 400 | int y5, y3, tmp; |
| 401 | int theta_low_bin = 0; |
| 402 | int i; |
| 403 | |
| 404 | /* disregard any bin that contains <= 16 samples */ |
| 405 | thresh_accum_cnt = 16; |
| 406 | scale_factor = 5; |
| 407 | max_index = 0; |
| 408 | memset(theta, 0, sizeof(theta)); |
| 409 | memset(x_est, 0, sizeof(x_est)); |
| 410 | memset(Y, 0, sizeof(Y)); |
| 411 | memset(y_est, 0, sizeof(y_est)); |
| 412 | memset(x_tilde, 0, sizeof(x_tilde)); |
| 413 | |
| 414 | for (i = 0; i < NUM_BIN; i++) { |
| 415 | s32 accum_cnt, accum_tx, accum_rx, accum_ang; |
| 416 | |
| 417 | /* number of samples */ |
| 418 | accum_cnt = data_L[i] & 0xffff; |
| 419 | |
| 420 | if (accum_cnt <= thresh_accum_cnt) |
| 421 | continue; |
| 422 | |
| 423 | /* sum(tx amplitude) */ |
| 424 | accum_tx = ((data_L[i] >> 16) & 0xffff) | |
| 425 | ((data_U[i] & 0x7ff) << 16); |
| 426 | |
| 427 | /* sum(rx amplitude distance to lower bin edge) */ |
| 428 | accum_rx = ((data_U[i] >> 11) & 0x1f) | |
| 429 | ((data_L[i + 23] & 0xffff) << 5); |
| 430 | |
| 431 | /* sum(angles) */ |
| 432 | accum_ang = ((data_L[i + 23] >> 16) & 0xffff) | |
| 433 | ((data_U[i + 23] & 0x7ff) << 16); |
| 434 | |
| 435 | accum_tx <<= scale_factor; |
| 436 | accum_rx <<= scale_factor; |
| 437 | x_est[i + 1] = (((accum_tx + accum_cnt) / accum_cnt) + 32) >> |
| 438 | scale_factor; |
| 439 | |
| 440 | Y[i + 1] = ((((accum_rx + accum_cnt) / accum_cnt) + 32) >> |
| 441 | scale_factor) + |
| 442 | (1 << scale_factor) * max_index + 16; |
| 443 | |
| 444 | if (accum_ang >= (1 << 26)) |
| 445 | accum_ang -= 1 << 27; |
| 446 | |
| 447 | theta[i + 1] = ((accum_ang * (1 << scale_factor)) + accum_cnt) / |
| 448 | accum_cnt; |
| 449 | |
| 450 | max_index++; |
| 451 | } |
| 452 | |
| 453 | /* |
| 454 | * Find average theta of first 5 bin and all of those to same value. |
| 455 | * Curve is linear at that range. |
| 456 | */ |
| 457 | for (i = 1; i < 6; i++) |
| 458 | theta_low_bin += theta[i]; |
| 459 | |
| 460 | theta_low_bin = theta_low_bin / 5; |
| 461 | for (i = 1; i < 6; i++) |
| 462 | theta[i] = theta_low_bin; |
| 463 | |
| 464 | /* Set values at origin */ |
| 465 | theta[0] = theta_low_bin; |
| 466 | for (i = 0; i <= max_index; i++) |
| 467 | theta[i] -= theta_low_bin; |
| 468 | |
| 469 | x_est[0] = 0; |
| 470 | Y[0] = 0; |
| 471 | scale_factor = 8; |
| 472 | |
| 473 | /* low signal gain */ |
| 474 | if (x_est[6] == x_est[3]) |
| 475 | return false; |
| 476 | |
| 477 | G_fxp = |
| 478 | (((Y[6] - Y[3]) * 1 << scale_factor) + |
| 479 | (x_est[6] - x_est[3])) / (x_est[6] - x_est[3]); |
| 480 | |
Senthil Balasubramanian | 2d3fca1 | 2010-10-19 20:01:41 +0530 | [diff] [blame] | 481 | /* prevent division by zero */ |
| 482 | if (G_fxp == 0) |
| 483 | return false; |
| 484 | |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 485 | Y_intercept = |
| 486 | (G_fxp * (x_est[0] - x_est[3]) + |
| 487 | (1 << scale_factor)) / (1 << scale_factor) + Y[3]; |
| 488 | |
| 489 | for (i = 0; i <= max_index; i++) |
| 490 | y_est[i] = Y[i] - Y_intercept; |
| 491 | |
| 492 | for (i = 0; i <= 3; i++) { |
| 493 | y_est[i] = i * 32; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 494 | x_est[i] = ((y_est[i] * 1 << scale_factor) + G_fxp) / G_fxp; |
| 495 | } |
| 496 | |
Senthil Balasubramanian | 2d3fca1 | 2010-10-19 20:01:41 +0530 | [diff] [blame] | 497 | if (y_est[max_index] == 0) |
| 498 | return false; |
| 499 | |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 500 | x_est_fxp1_nonlin = |
| 501 | x_est[max_index] - ((1 << scale_factor) * y_est[max_index] + |
| 502 | G_fxp) / G_fxp; |
| 503 | |
| 504 | order_x_by_y = |
| 505 | (x_est_fxp1_nonlin + y_est[max_index]) / y_est[max_index]; |
| 506 | |
| 507 | if (order_x_by_y == 0) |
| 508 | M = 10; |
| 509 | else if (order_x_by_y == 1) |
| 510 | M = 9; |
| 511 | else |
| 512 | M = 8; |
| 513 | |
| 514 | I = (max_index > 15) ? 7 : max_index >> 1; |
| 515 | L = max_index - I; |
| 516 | scale_factor = 8; |
| 517 | sum_y_sqr = 0; |
| 518 | sum_y_quad = 0; |
| 519 | x_tilde_abs = 0; |
| 520 | |
| 521 | for (i = 0; i <= L; i++) { |
| 522 | unsigned int y_sqr; |
| 523 | unsigned int y_quad; |
| 524 | unsigned int tmp_abs; |
| 525 | |
| 526 | /* prevent division by zero */ |
| 527 | if (y_est[i + I] == 0) |
| 528 | return false; |
| 529 | |
| 530 | x_est_fxp1_nonlin = |
| 531 | x_est[i + I] - ((1 << scale_factor) * y_est[i + I] + |
| 532 | G_fxp) / G_fxp; |
| 533 | |
| 534 | x_tilde[i] = |
| 535 | (x_est_fxp1_nonlin * (1 << M) + y_est[i + I]) / y_est[i + |
| 536 | I]; |
| 537 | x_tilde[i] = |
| 538 | (x_tilde[i] * (1 << M) + y_est[i + I]) / y_est[i + I]; |
| 539 | x_tilde[i] = |
| 540 | (x_tilde[i] * (1 << M) + y_est[i + I]) / y_est[i + I]; |
| 541 | y_sqr = |
| 542 | (y_est[i + I] * y_est[i + I] + |
| 543 | (scale_factor * scale_factor)) / (scale_factor * |
| 544 | scale_factor); |
| 545 | tmp_abs = abs(x_tilde[i]); |
| 546 | if (tmp_abs > x_tilde_abs) |
| 547 | x_tilde_abs = tmp_abs; |
| 548 | |
| 549 | y_quad = y_sqr * y_sqr; |
| 550 | sum_y_sqr = sum_y_sqr + y_sqr; |
| 551 | sum_y_quad = sum_y_quad + y_quad; |
| 552 | B1_tmp[i] = y_sqr * (L + 1); |
| 553 | B2_tmp[i] = y_sqr; |
| 554 | } |
| 555 | |
| 556 | B1_abs_max = 0; |
| 557 | B2_abs_max = 0; |
| 558 | for (i = 0; i <= L; i++) { |
| 559 | int abs_val; |
| 560 | |
| 561 | B1_tmp[i] -= sum_y_sqr; |
| 562 | B2_tmp[i] = sum_y_quad - sum_y_sqr * B2_tmp[i]; |
| 563 | |
| 564 | abs_val = abs(B1_tmp[i]); |
| 565 | if (abs_val > B1_abs_max) |
| 566 | B1_abs_max = abs_val; |
| 567 | |
| 568 | abs_val = abs(B2_tmp[i]); |
| 569 | if (abs_val > B2_abs_max) |
| 570 | B2_abs_max = abs_val; |
| 571 | } |
| 572 | |
| 573 | Q_x = find_proper_scale(find_expn(x_tilde_abs), 10); |
| 574 | Q_B1 = find_proper_scale(find_expn(B1_abs_max), 10); |
| 575 | Q_B2 = find_proper_scale(find_expn(B2_abs_max), 10); |
| 576 | |
| 577 | beta_raw = 0; |
| 578 | alpha_raw = 0; |
| 579 | for (i = 0; i <= L; i++) { |
| 580 | x_tilde[i] = x_tilde[i] / (1 << Q_x); |
| 581 | B1_tmp[i] = B1_tmp[i] / (1 << Q_B1); |
| 582 | B2_tmp[i] = B2_tmp[i] / (1 << Q_B2); |
| 583 | beta_raw = beta_raw + B1_tmp[i] * x_tilde[i]; |
| 584 | alpha_raw = alpha_raw + B2_tmp[i] * x_tilde[i]; |
| 585 | } |
| 586 | |
| 587 | scale_B = |
| 588 | ((sum_y_quad / scale_factor) * (L + 1) - |
| 589 | (sum_y_sqr / scale_factor) * sum_y_sqr) * scale_factor; |
| 590 | |
| 591 | Q_scale_B = find_proper_scale(find_expn(abs(scale_B)), 10); |
| 592 | scale_B = scale_B / (1 << Q_scale_B); |
Senthil Balasubramanian | 2d3fca1 | 2010-10-19 20:01:41 +0530 | [diff] [blame] | 593 | if (scale_B == 0) |
| 594 | return false; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 595 | Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10); |
| 596 | Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10); |
| 597 | beta_raw = beta_raw / (1 << Q_beta); |
| 598 | alpha_raw = alpha_raw / (1 << Q_alpha); |
| 599 | alpha = (alpha_raw << 10) / scale_B; |
| 600 | beta = (beta_raw << 10) / scale_B; |
| 601 | order_1 = 3 * M - Q_x - Q_B1 - Q_beta + 10 + Q_scale_B; |
| 602 | order_2 = 3 * M - Q_x - Q_B2 - Q_alpha + 10 + Q_scale_B; |
| 603 | order1_5x = order_1 / 5; |
| 604 | order2_3x = order_2 / 3; |
| 605 | order1_5x_rem = order_1 - 5 * order1_5x; |
| 606 | order2_3x_rem = order_2 - 3 * order2_3x; |
| 607 | |
| 608 | for (i = 0; i < PAPRD_TABLE_SZ; i++) { |
| 609 | tmp = i * 32; |
| 610 | y5 = ((beta * tmp) >> 6) >> order1_5x; |
| 611 | y5 = (y5 * tmp) >> order1_5x; |
| 612 | y5 = (y5 * tmp) >> order1_5x; |
| 613 | y5 = (y5 * tmp) >> order1_5x; |
| 614 | y5 = (y5 * tmp) >> order1_5x; |
| 615 | y5 = y5 >> order1_5x_rem; |
| 616 | y3 = (alpha * tmp) >> order2_3x; |
| 617 | y3 = (y3 * tmp) >> order2_3x; |
| 618 | y3 = (y3 * tmp) >> order2_3x; |
| 619 | y3 = y3 >> order2_3x_rem; |
| 620 | PA_in[i] = y5 + y3 + (256 * tmp) / G_fxp; |
| 621 | |
| 622 | if (i >= 2) { |
| 623 | tmp = PA_in[i] - PA_in[i - 1]; |
| 624 | if (tmp < 0) |
| 625 | PA_in[i] = |
| 626 | PA_in[i - 1] + (PA_in[i - 1] - |
| 627 | PA_in[i - 2]); |
| 628 | } |
| 629 | |
| 630 | PA_in[i] = (PA_in[i] < 1400) ? PA_in[i] : 1400; |
| 631 | } |
| 632 | |
| 633 | beta_raw = 0; |
| 634 | alpha_raw = 0; |
| 635 | |
| 636 | for (i = 0; i <= L; i++) { |
| 637 | int theta_tilde = |
| 638 | ((theta[i + I] << M) + y_est[i + I]) / y_est[i + I]; |
| 639 | theta_tilde = |
| 640 | ((theta_tilde << M) + y_est[i + I]) / y_est[i + I]; |
| 641 | theta_tilde = |
| 642 | ((theta_tilde << M) + y_est[i + I]) / y_est[i + I]; |
| 643 | beta_raw = beta_raw + B1_tmp[i] * theta_tilde; |
| 644 | alpha_raw = alpha_raw + B2_tmp[i] * theta_tilde; |
| 645 | } |
| 646 | |
| 647 | Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10); |
| 648 | Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10); |
| 649 | beta_raw = beta_raw / (1 << Q_beta); |
| 650 | alpha_raw = alpha_raw / (1 << Q_alpha); |
| 651 | |
| 652 | alpha = (alpha_raw << 10) / scale_B; |
| 653 | beta = (beta_raw << 10) / scale_B; |
| 654 | order_1 = 3 * M - Q_x - Q_B1 - Q_beta + 10 + Q_scale_B + 5; |
| 655 | order_2 = 3 * M - Q_x - Q_B2 - Q_alpha + 10 + Q_scale_B + 5; |
| 656 | order1_5x = order_1 / 5; |
| 657 | order2_3x = order_2 / 3; |
| 658 | order1_5x_rem = order_1 - 5 * order1_5x; |
| 659 | order2_3x_rem = order_2 - 3 * order2_3x; |
| 660 | |
| 661 | for (i = 0; i < PAPRD_TABLE_SZ; i++) { |
| 662 | int PA_angle; |
| 663 | |
| 664 | /* pa_table[4] is calculated from PA_angle for i=5 */ |
| 665 | if (i == 4) |
| 666 | continue; |
| 667 | |
| 668 | tmp = i * 32; |
| 669 | if (beta > 0) |
| 670 | y5 = (((beta * tmp - 64) >> 6) - |
| 671 | (1 << order1_5x)) / (1 << order1_5x); |
| 672 | else |
| 673 | y5 = ((((beta * tmp - 64) >> 6) + |
| 674 | (1 << order1_5x)) / (1 << order1_5x)); |
| 675 | |
| 676 | y5 = (y5 * tmp) / (1 << order1_5x); |
| 677 | y5 = (y5 * tmp) / (1 << order1_5x); |
| 678 | y5 = (y5 * tmp) / (1 << order1_5x); |
| 679 | y5 = (y5 * tmp) / (1 << order1_5x); |
| 680 | y5 = y5 / (1 << order1_5x_rem); |
| 681 | |
| 682 | if (beta > 0) |
| 683 | y3 = (alpha * tmp - |
| 684 | (1 << order2_3x)) / (1 << order2_3x); |
| 685 | else |
| 686 | y3 = (alpha * tmp + |
| 687 | (1 << order2_3x)) / (1 << order2_3x); |
| 688 | y3 = (y3 * tmp) / (1 << order2_3x); |
| 689 | y3 = (y3 * tmp) / (1 << order2_3x); |
| 690 | y3 = y3 / (1 << order2_3x_rem); |
| 691 | |
| 692 | if (i < 4) { |
| 693 | PA_angle = 0; |
| 694 | } else { |
| 695 | PA_angle = y5 + y3; |
| 696 | if (PA_angle < -150) |
| 697 | PA_angle = -150; |
| 698 | else if (PA_angle > 150) |
| 699 | PA_angle = 150; |
| 700 | } |
| 701 | |
| 702 | pa_table[i] = ((PA_in[i] & 0x7ff) << 11) + (PA_angle & 0x7ff); |
| 703 | if (i == 5) { |
| 704 | PA_angle = (PA_angle + 2) >> 1; |
| 705 | pa_table[i - 1] = ((PA_in[i - 1] & 0x7ff) << 11) + |
| 706 | (PA_angle & 0x7ff); |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | *gain = G_fxp; |
| 711 | return true; |
| 712 | } |
| 713 | |
| 714 | void ar9003_paprd_populate_single_table(struct ath_hw *ah, |
Felix Fietkau | 20bd2a0 | 2010-07-31 00:12:00 +0200 | [diff] [blame] | 715 | struct ath9k_hw_cal_data *caldata, |
| 716 | int chain) |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 717 | { |
Felix Fietkau | 20bd2a0 | 2010-07-31 00:12:00 +0200 | [diff] [blame] | 718 | u32 *paprd_table_val = caldata->pa_table[chain]; |
| 719 | u32 small_signal_gain = caldata->small_signal_gain[chain]; |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 720 | u32 training_power = ah->paprd_training_power; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 721 | u32 reg = 0; |
| 722 | int i; |
| 723 | |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 724 | if (chain == 0) |
| 725 | reg = AR_PHY_PAPRD_MEM_TAB_B0; |
| 726 | else if (chain == 1) |
| 727 | reg = AR_PHY_PAPRD_MEM_TAB_B1; |
| 728 | else if (chain == 2) |
| 729 | reg = AR_PHY_PAPRD_MEM_TAB_B2; |
| 730 | |
| 731 | for (i = 0; i < PAPRD_TABLE_SZ; i++) { |
| 732 | REG_WRITE(ah, reg, paprd_table_val[i]); |
| 733 | reg = reg + 4; |
| 734 | } |
| 735 | |
| 736 | if (chain == 0) |
| 737 | reg = AR_PHY_PA_GAIN123_B0; |
| 738 | else if (chain == 1) |
| 739 | reg = AR_PHY_PA_GAIN123_B1; |
| 740 | else |
| 741 | reg = AR_PHY_PA_GAIN123_B2; |
| 742 | |
| 743 | REG_RMW_FIELD(ah, reg, AR_PHY_PA_GAIN123_PA_GAIN1, small_signal_gain); |
| 744 | |
| 745 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B0, |
| 746 | AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL, |
| 747 | training_power); |
| 748 | |
Vasanthakumar Thiagarajan | 11441fb | 2010-12-06 04:27:58 -0800 | [diff] [blame] | 749 | if (ah->caps.tx_chainmask & BIT(1)) |
| 750 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B1, |
| 751 | AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL, |
| 752 | training_power); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 753 | |
Vasanthakumar Thiagarajan | 11441fb | 2010-12-06 04:27:58 -0800 | [diff] [blame] | 754 | if (ah->caps.tx_chainmask & BIT(2)) |
Senthil Balasubramanian | 2577c6e | 2011-09-13 22:38:18 +0530 | [diff] [blame] | 755 | /* val AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL correct? */ |
Vasanthakumar Thiagarajan | 11441fb | 2010-12-06 04:27:58 -0800 | [diff] [blame] | 756 | REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B2, |
| 757 | AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL, |
| 758 | training_power); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 759 | } |
| 760 | EXPORT_SYMBOL(ar9003_paprd_populate_single_table); |
| 761 | |
| 762 | int ar9003_paprd_setup_gain_table(struct ath_hw *ah, int chain) |
| 763 | { |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 764 | unsigned int i, desired_gain, gain_index; |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 765 | unsigned int train_power = ah->paprd_training_power; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 766 | |
| 767 | desired_gain = ar9003_get_desired_gain(ah, chain, train_power); |
| 768 | |
| 769 | gain_index = 0; |
Mohammed Shafi Shajakhan | 05b60d4 | 2011-06-23 20:14:29 +0530 | [diff] [blame] | 770 | for (i = 0; i < PAPRD_GAIN_TABLE_ENTRIES; i++) { |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 771 | if (ah->paprd_gain_table_index[i] >= desired_gain) |
| 772 | break; |
| 773 | gain_index++; |
| 774 | } |
| 775 | |
| 776 | ar9003_tx_force_gain(ah, gain_index); |
| 777 | |
| 778 | REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1, |
| 779 | AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); |
| 780 | |
| 781 | return 0; |
| 782 | } |
| 783 | EXPORT_SYMBOL(ar9003_paprd_setup_gain_table); |
| 784 | |
Felix Fietkau | 20bd2a0 | 2010-07-31 00:12:00 +0200 | [diff] [blame] | 785 | int ar9003_paprd_create_curve(struct ath_hw *ah, |
| 786 | struct ath9k_hw_cal_data *caldata, int chain) |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 787 | { |
Felix Fietkau | 20bd2a0 | 2010-07-31 00:12:00 +0200 | [diff] [blame] | 788 | u16 *small_signal_gain = &caldata->small_signal_gain[chain]; |
| 789 | u32 *pa_table = caldata->pa_table[chain]; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 790 | u32 *data_L, *data_U; |
| 791 | int i, status = 0; |
| 792 | u32 *buf; |
| 793 | u32 reg; |
| 794 | |
Felix Fietkau | 20bd2a0 | 2010-07-31 00:12:00 +0200 | [diff] [blame] | 795 | memset(caldata->pa_table[chain], 0, sizeof(caldata->pa_table[chain])); |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 796 | |
| 797 | buf = kmalloc(2 * 48 * sizeof(u32), GFP_ATOMIC); |
| 798 | if (!buf) |
| 799 | return -ENOMEM; |
| 800 | |
| 801 | data_L = &buf[0]; |
| 802 | data_U = &buf[48]; |
| 803 | |
| 804 | REG_CLR_BIT(ah, AR_PHY_CHAN_INFO_MEMORY, |
| 805 | AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ); |
| 806 | |
| 807 | reg = AR_PHY_CHAN_INFO_TAB_0; |
| 808 | for (i = 0; i < 48; i++) |
| 809 | data_L[i] = REG_READ(ah, reg + (i << 2)); |
| 810 | |
| 811 | REG_SET_BIT(ah, AR_PHY_CHAN_INFO_MEMORY, |
| 812 | AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ); |
| 813 | |
| 814 | for (i = 0; i < 48; i++) |
| 815 | data_U[i] = REG_READ(ah, reg + (i << 2)); |
| 816 | |
| 817 | if (!create_pa_curve(data_L, data_U, pa_table, small_signal_gain)) |
| 818 | status = -2; |
| 819 | |
| 820 | REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1, |
| 821 | AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); |
| 822 | |
| 823 | kfree(buf); |
| 824 | |
| 825 | return status; |
| 826 | } |
| 827 | EXPORT_SYMBOL(ar9003_paprd_create_curve); |
| 828 | |
| 829 | int ar9003_paprd_init_table(struct ath_hw *ah) |
| 830 | { |
Felix Fietkau | 1bf3866 | 2010-12-13 08:40:54 +0100 | [diff] [blame] | 831 | int ret; |
| 832 | |
| 833 | ret = ar9003_paprd_setup_single_table(ah); |
| 834 | if (ret < 0) |
| 835 | return ret; |
| 836 | |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 837 | ar9003_paprd_get_gain_table(ah); |
| 838 | return 0; |
| 839 | } |
| 840 | EXPORT_SYMBOL(ar9003_paprd_init_table); |
| 841 | |
| 842 | bool ar9003_paprd_is_done(struct ath_hw *ah) |
| 843 | { |
Mohammed Shafi Shajakhan | 0e44d48 | 2011-06-17 14:08:42 +0530 | [diff] [blame] | 844 | int paprd_done, agc2_pwr; |
| 845 | paprd_done = REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_STAT1, |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 846 | AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE); |
Mohammed Shafi Shajakhan | 0e44d48 | 2011-06-17 14:08:42 +0530 | [diff] [blame] | 847 | |
| 848 | if (paprd_done == 0x1) { |
| 849 | agc2_pwr = REG_READ_FIELD(ah, AR_PHY_PAPRD_TRAINER_STAT1, |
| 850 | AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_AGC2_PWR); |
| 851 | |
Joe Perches | d2182b6 | 2011-12-15 14:55:53 -0800 | [diff] [blame] | 852 | ath_dbg(ath9k_hw_common(ah), CALIBRATE, |
Mohammed Shafi Shajakhan | 0e44d48 | 2011-06-17 14:08:42 +0530 | [diff] [blame] | 853 | "AGC2_PWR = 0x%x training done = 0x%x\n", |
| 854 | agc2_pwr, paprd_done); |
| 855 | /* |
| 856 | * agc2_pwr range should not be less than 'IDEAL_AGC2_PWR_CHANGE' |
| 857 | * when the training is completely done, otherwise retraining is |
| 858 | * done to make sure the value is in ideal range |
| 859 | */ |
| 860 | if (agc2_pwr <= PAPRD_IDEAL_AGC2_PWR_RANGE) |
| 861 | paprd_done = 0; |
| 862 | } |
| 863 | |
| 864 | return !!paprd_done; |
Felix Fietkau | 717f6be | 2010-06-12 00:34:00 -0400 | [diff] [blame] | 865 | } |
| 866 | EXPORT_SYMBOL(ar9003_paprd_is_done); |