--- /dev/null
+/*
+ * Copyright (c) 2010 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
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "hw.h"
+#include "ar9003_phy.h"
+
+void ar9003_paprd_enable(struct ath_hw *ah, bool val)
+{
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B0,
+ AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B1,
+ AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B2,
+ AR_PHY_PAPRD_CTRL0_PAPRD_ENABLE, !!val);
+}
+EXPORT_SYMBOL(ar9003_paprd_enable);
+
+static void ar9003_paprd_setup_single_table(struct ath_hw *ah)
+{
+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+ struct ar9300_modal_eep_header *hdr;
+ const u32 ctrl0[3] = {
+ AR_PHY_PAPRD_CTRL0_B0,
+ AR_PHY_PAPRD_CTRL0_B1,
+ AR_PHY_PAPRD_CTRL0_B2
+ };
+ const u32 ctrl1[3] = {
+ AR_PHY_PAPRD_CTRL1_B0,
+ AR_PHY_PAPRD_CTRL1_B1,
+ AR_PHY_PAPRD_CTRL1_B2
+ };
+ u32 am_mask, ht40_mask;
+ int i;
+
+ if (ah->curchan && IS_CHAN_5GHZ(ah->curchan))
+ hdr = &eep->modalHeader5G;
+ else
+ hdr = &eep->modalHeader2G;
+
+ am_mask = le32_to_cpu(hdr->papdRateMaskHt20);
+ ht40_mask = le32_to_cpu(hdr->papdRateMaskHt40);
+
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2AM, AR_PHY_PAPRD_AM2AM_MASK, am_mask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_AM2PM, AR_PHY_PAPRD_AM2PM_MASK, am_mask);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_HT40, AR_PHY_PAPRD_HT40_MASK, ht40_mask);
+
+ for (i = 0; i < 3; i++) {
+ REG_RMW_FIELD(ah, ctrl0[i],
+ AR_PHY_PAPRD_CTRL0_USE_SINGLE_TABLE_MASK, 1);
+ REG_RMW_FIELD(ah, ctrl1[i],
+ AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2PM_ENABLE, 1);
+ REG_RMW_FIELD(ah, ctrl1[i],
+ AR_PHY_PAPRD_CTRL1_ADAPTIVE_AM2AM_ENABLE, 1);
+ REG_RMW_FIELD(ah, ctrl1[i],
+ AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA, 0);
+ REG_RMW_FIELD(ah, ctrl1[i],
+ AR_PHY_PAPRD_CTRL1_PA_GAIN_SCALE_FACT_MASK, 181);
+ REG_RMW_FIELD(ah, ctrl1[i],
+ AR_PHY_PAPRD_CTRL1_PAPRD_MAG_SCALE_FACT, 361);
+ REG_RMW_FIELD(ah, ctrl1[i],
+ AR_PHY_PAPRD_CTRL1_ADAPTIVE_SCALING_ENA, 0);
+ REG_RMW_FIELD(ah, ctrl0[i],
+ AR_PHY_PAPRD_CTRL0_PAPRD_MAG_THRSH, 3);
+ }
+
+ ar9003_paprd_enable(ah, false);
+
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
+ AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_SKIP, 0x30);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
+ AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_LB_ENABLE, 1);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
+ AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_TX_GAIN_FORCE, 1);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
+ AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_RX_BB_GAIN_FORCE, 0);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
+ AR_PHY_PAPRD_TRAINER_CNTL1_CF_PAPRD_IQCORR_ENABLE, 0);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL1,
+ 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);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL2,
+ AR_PHY_PAPRD_TRAINER_CNTL2_CF_PAPRD_INIT_RX_BB_GAIN, 147);
+ 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,
+ AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_COARSE_CORR_LEN, 4);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
+ 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);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
+ AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_QUICK_DROP, -6);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL3,
+ AR_PHY_PAPRD_TRAINER_CNTL3_CF_PAPRD_ADC_DESIRED_SIZE,
+ -15);
+ 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,
+ AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_SAFETY_DELTA, 0);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4,
+ AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_MIN_CORR, 400);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_TRAINER_CNTL4,
+ AR_PHY_PAPRD_TRAINER_CNTL4_CF_PAPRD_NUM_TRAIN_SAMPLES,
+ 100);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_0_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 261376);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_1_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 248079);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_2_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 233759);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_3_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 220464);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_4_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 208194);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_5_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 196949);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_6_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 185706);
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_PRE_POST_SCALE_7_B0,
+ AR_PHY_PAPRD_PRE_POST_SCALING, 175487);
+}
+
+static void ar9003_paprd_get_gain_table(struct ath_hw *ah)
+{
+ u32 *entry = ah->paprd_gain_table_entries;
+ u8 *index = ah->paprd_gain_table_index;
+ 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++) {
+ entry[i] = REG_READ(ah, reg);
+ index[i] = (entry[i] >> 24) & 0xff;
+ reg += 4;
+ }
+}
+
+static unsigned int ar9003_get_desired_gain(struct ath_hw *ah, int chain,
+ int target_power)
+{
+ int olpc_gain_delta = 0;
+ 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;
+
+ REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
+ AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
+ desired_scale = REG_READ_FIELD(ah, AR_PHY_TPC_12,
+ AR_PHY_TPC_12_DESIRED_SCALE_HT40_5);
+ alpha_therm = REG_READ_FIELD(ah, AR_PHY_TPC_19,
+ AR_PHY_TPC_19_ALPHA_THERM);
+ alpha_volt = REG_READ_FIELD(ah, AR_PHY_TPC_19,
+ AR_PHY_TPC_19_ALPHA_VOLT);
+ therm_cal_value = REG_READ_FIELD(ah, AR_PHY_TPC_18,
+ AR_PHY_TPC_18_THERM_CAL_VALUE);
+ volt_cal_value = REG_READ_FIELD(ah, AR_PHY_TPC_18,
+ AR_PHY_TPC_18_VOLT_CAL_VALUE);
+ therm_value = REG_READ_FIELD(ah, AR_PHY_BB_THERM_ADC_4,
+ AR_PHY_BB_THERM_ADC_4_LATEST_THERM_VALUE);
+ 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;
+
+ olpc_gain_delta = REG_READ_FIELD(ah, reg,
+ AR_PHY_TPC_11_OLPC_GAIN_DELTA);
+
+ if (olpc_gain_delta >= 128)
+ olpc_gain_delta = olpc_gain_delta - 256;
+
+ thermal_gain_corr = (alpha_therm * (therm_value - therm_cal_value) +
+ (256 / 2)) / 256;
+ 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;
+
+ return desired_gain;
+}
+
+static void ar9003_tx_force_gain(struct ath_hw *ah, unsigned int gain_index)
+{
+ int selected_gain_entry, txbb1dbgain, txbb6dbgain, txmxrgain;
+ int padrvgnA, padrvgnB, padrvgnC, padrvgnD;
+ u32 *gain_table_entries = ah->paprd_gain_table_entries;
+
+ selected_gain_entry = gain_table_entries[gain_index];
+ txbb1dbgain = selected_gain_entry & 0x7;
+ txbb6dbgain = (selected_gain_entry >> 3) & 0x3;
+ txmxrgain = (selected_gain_entry >> 5) & 0xf;
+ padrvgnA = (selected_gain_entry >> 9) & 0xf;
+ padrvgnB = (selected_gain_entry >> 13) & 0xf;
+ padrvgnC = (selected_gain_entry >> 17) & 0xf;
+ padrvgnD = (selected_gain_entry >> 21) & 0x3;
+
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_TXBB1DBGAIN, txbb1dbgain);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_TXBB6DBGAIN, txbb6dbgain);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_TXMXRGAIN, txmxrgain);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNA, padrvgnA);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNB, padrvgnB);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGNC, padrvgnC);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_PADRVGND, padrvgnD);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCED_ENABLE_PAL, 0);
+ REG_RMW_FIELD(ah, AR_PHY_TX_FORCED_GAIN,
+ AR_PHY_TX_FORCED_GAIN_FORCE_TX_GAIN, 0);
+ REG_RMW_FIELD(ah, AR_PHY_TPC_1, AR_PHY_TPC_1_FORCED_DAC_GAIN, 0);
+ REG_RMW_FIELD(ah, AR_PHY_TPC_1, AR_PHY_TPC_1_FORCE_DAC_GAIN, 0);
+}
+
+static inline int find_expn(int num)
+{
+ return fls(num) - 1;
+}
+
+static inline int find_proper_scale(int expn, int N)
+{
+ return (expn > N) ? expn - 10 : 0;
+}
+
+#define NUM_BIN 23
+
+static bool create_pa_curve(u32 *data_L, u32 *data_U, u32 *pa_table, u16 *gain)
+{
+ unsigned int thresh_accum_cnt;
+ int x_est[NUM_BIN + 1], Y[NUM_BIN + 1], theta[NUM_BIN + 1];
+ int PA_in[NUM_BIN + 1];
+ int B1_tmp[NUM_BIN + 1], B2_tmp[NUM_BIN + 1];
+ unsigned int B1_abs_max, B2_abs_max;
+ int max_index, scale_factor;
+ int y_est[NUM_BIN + 1];
+ int x_est_fxp1_nonlin, x_tilde[NUM_BIN + 1];
+ unsigned int x_tilde_abs;
+ int G_fxp, Y_intercept, order_x_by_y, M, I, L, sum_y_sqr, sum_y_quad;
+ int Q_x, Q_B1, Q_B2, beta_raw, alpha_raw, scale_B;
+ int Q_scale_B, Q_beta, Q_alpha, alpha, beta, order_1, order_2;
+ int order1_5x, order2_3x, order1_5x_rem, order2_3x_rem;
+ int y5, y3, tmp;
+ int theta_low_bin = 0;
+ int i;
+
+ /* disregard any bin that contains <= 16 samples */
+ thresh_accum_cnt = 16;
+ scale_factor = 5;
+ max_index = 0;
+ memset(theta, 0, sizeof(theta));
+ memset(x_est, 0, sizeof(x_est));
+ memset(Y, 0, sizeof(Y));
+ memset(y_est, 0, sizeof(y_est));
+ memset(x_tilde, 0, sizeof(x_tilde));
+
+ for (i = 0; i < NUM_BIN; i++) {
+ s32 accum_cnt, accum_tx, accum_rx, accum_ang;
+
+ /* number of samples */
+ accum_cnt = data_L[i] & 0xffff;
+
+ if (accum_cnt <= thresh_accum_cnt)
+ continue;
+
+ /* sum(tx amplitude) */
+ accum_tx = ((data_L[i] >> 16) & 0xffff) |
+ ((data_U[i] & 0x7ff) << 16);
+
+ /* sum(rx amplitude distance to lower bin edge) */
+ accum_rx = ((data_U[i] >> 11) & 0x1f) |
+ ((data_L[i + 23] & 0xffff) << 5);
+
+ /* sum(angles) */
+ accum_ang = ((data_L[i + 23] >> 16) & 0xffff) |
+ ((data_U[i + 23] & 0x7ff) << 16);
+
+ accum_tx <<= scale_factor;
+ accum_rx <<= scale_factor;
+ x_est[i + 1] = (((accum_tx + accum_cnt) / accum_cnt) + 32) >>
+ scale_factor;
+
+ Y[i + 1] = ((((accum_rx + accum_cnt) / accum_cnt) + 32) >>
+ scale_factor) +
+ (1 << scale_factor) * max_index + 16;
+
+ if (accum_ang >= (1 << 26))
+ accum_ang -= 1 << 27;
+
+ theta[i + 1] = ((accum_ang * (1 << scale_factor)) + accum_cnt) /
+ accum_cnt;
+
+ max_index++;
+ }
+
+ /*
+ * Find average theta of first 5 bin and all of those to same value.
+ * Curve is linear at that range.
+ */
+ for (i = 1; i < 6; i++)
+ theta_low_bin += theta[i];
+
+ theta_low_bin = theta_low_bin / 5;
+ for (i = 1; i < 6; i++)
+ theta[i] = theta_low_bin;
+
+ /* Set values at origin */
+ theta[0] = theta_low_bin;
+ for (i = 0; i <= max_index; i++)
+ theta[i] -= theta_low_bin;
+
+ x_est[0] = 0;
+ Y[0] = 0;
+ scale_factor = 8;
+
+ /* low signal gain */
+ if (x_est[6] == x_est[3])
+ return false;
+
+ G_fxp =
+ (((Y[6] - Y[3]) * 1 << scale_factor) +
+ (x_est[6] - x_est[3])) / (x_est[6] - x_est[3]);
+
+ Y_intercept =
+ (G_fxp * (x_est[0] - x_est[3]) +
+ (1 << scale_factor)) / (1 << scale_factor) + Y[3];
+
+ for (i = 0; i <= max_index; i++)
+ y_est[i] = Y[i] - Y_intercept;
+
+ for (i = 0; i <= 3; i++) {
+ y_est[i] = i * 32;
+
+ /* prevent division by zero */
+ if (G_fxp == 0)
+ return false;
+
+ x_est[i] = ((y_est[i] * 1 << scale_factor) + G_fxp) / G_fxp;
+ }
+
+ x_est_fxp1_nonlin =
+ x_est[max_index] - ((1 << scale_factor) * y_est[max_index] +
+ G_fxp) / G_fxp;
+
+ order_x_by_y =
+ (x_est_fxp1_nonlin + y_est[max_index]) / y_est[max_index];
+
+ if (order_x_by_y == 0)
+ M = 10;
+ else if (order_x_by_y == 1)
+ M = 9;
+ else
+ M = 8;
+
+ I = (max_index > 15) ? 7 : max_index >> 1;
+ L = max_index - I;
+ scale_factor = 8;
+ sum_y_sqr = 0;
+ sum_y_quad = 0;
+ x_tilde_abs = 0;
+
+ for (i = 0; i <= L; i++) {
+ unsigned int y_sqr;
+ unsigned int y_quad;
+ unsigned int tmp_abs;
+
+ /* prevent division by zero */
+ if (y_est[i + I] == 0)
+ return false;
+
+ x_est_fxp1_nonlin =
+ x_est[i + I] - ((1 << scale_factor) * y_est[i + I] +
+ G_fxp) / G_fxp;
+
+ x_tilde[i] =
+ (x_est_fxp1_nonlin * (1 << M) + y_est[i + I]) / y_est[i +
+ I];
+ x_tilde[i] =
+ (x_tilde[i] * (1 << M) + y_est[i + I]) / y_est[i + I];
+ x_tilde[i] =
+ (x_tilde[i] * (1 << M) + y_est[i + I]) / y_est[i + I];
+ y_sqr =
+ (y_est[i + I] * y_est[i + I] +
+ (scale_factor * scale_factor)) / (scale_factor *
+ scale_factor);
+ tmp_abs = abs(x_tilde[i]);
+ if (tmp_abs > x_tilde_abs)
+ x_tilde_abs = tmp_abs;
+
+ y_quad = y_sqr * y_sqr;
+ sum_y_sqr = sum_y_sqr + y_sqr;
+ sum_y_quad = sum_y_quad + y_quad;
+ B1_tmp[i] = y_sqr * (L + 1);
+ B2_tmp[i] = y_sqr;
+ }
+
+ B1_abs_max = 0;
+ B2_abs_max = 0;
+ for (i = 0; i <= L; i++) {
+ int abs_val;
+
+ B1_tmp[i] -= sum_y_sqr;
+ B2_tmp[i] = sum_y_quad - sum_y_sqr * B2_tmp[i];
+
+ abs_val = abs(B1_tmp[i]);
+ if (abs_val > B1_abs_max)
+ B1_abs_max = abs_val;
+
+ abs_val = abs(B2_tmp[i]);
+ if (abs_val > B2_abs_max)
+ B2_abs_max = abs_val;
+ }
+
+ Q_x = find_proper_scale(find_expn(x_tilde_abs), 10);
+ Q_B1 = find_proper_scale(find_expn(B1_abs_max), 10);
+ Q_B2 = find_proper_scale(find_expn(B2_abs_max), 10);
+
+ beta_raw = 0;
+ alpha_raw = 0;
+ for (i = 0; i <= L; i++) {
+ x_tilde[i] = x_tilde[i] / (1 << Q_x);
+ B1_tmp[i] = B1_tmp[i] / (1 << Q_B1);
+ B2_tmp[i] = B2_tmp[i] / (1 << Q_B2);
+ beta_raw = beta_raw + B1_tmp[i] * x_tilde[i];
+ alpha_raw = alpha_raw + B2_tmp[i] * x_tilde[i];
+ }
+
+ scale_B =
+ ((sum_y_quad / scale_factor) * (L + 1) -
+ (sum_y_sqr / scale_factor) * sum_y_sqr) * scale_factor;
+
+ Q_scale_B = find_proper_scale(find_expn(abs(scale_B)), 10);
+ scale_B = scale_B / (1 << Q_scale_B);
+ Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10);
+ Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10);
+ beta_raw = beta_raw / (1 << Q_beta);
+ alpha_raw = alpha_raw / (1 << Q_alpha);
+ alpha = (alpha_raw << 10) / scale_B;
+ beta = (beta_raw << 10) / scale_B;
+ order_1 = 3 * M - Q_x - Q_B1 - Q_beta + 10 + Q_scale_B;
+ order_2 = 3 * M - Q_x - Q_B2 - Q_alpha + 10 + Q_scale_B;
+ order1_5x = order_1 / 5;
+ order2_3x = order_2 / 3;
+ order1_5x_rem = order_1 - 5 * order1_5x;
+ order2_3x_rem = order_2 - 3 * order2_3x;
+
+ for (i = 0; i < PAPRD_TABLE_SZ; i++) {
+ tmp = i * 32;
+ y5 = ((beta * tmp) >> 6) >> order1_5x;
+ y5 = (y5 * tmp) >> order1_5x;
+ y5 = (y5 * tmp) >> order1_5x;
+ y5 = (y5 * tmp) >> order1_5x;
+ y5 = (y5 * tmp) >> order1_5x;
+ y5 = y5 >> order1_5x_rem;
+ y3 = (alpha * tmp) >> order2_3x;
+ y3 = (y3 * tmp) >> order2_3x;
+ y3 = (y3 * tmp) >> order2_3x;
+ y3 = y3 >> order2_3x_rem;
+ PA_in[i] = y5 + y3 + (256 * tmp) / G_fxp;
+
+ if (i >= 2) {
+ tmp = PA_in[i] - PA_in[i - 1];
+ if (tmp < 0)
+ PA_in[i] =
+ PA_in[i - 1] + (PA_in[i - 1] -
+ PA_in[i - 2]);
+ }
+
+ PA_in[i] = (PA_in[i] < 1400) ? PA_in[i] : 1400;
+ }
+
+ beta_raw = 0;
+ alpha_raw = 0;
+
+ for (i = 0; i <= L; i++) {
+ int theta_tilde =
+ ((theta[i + I] << M) + y_est[i + I]) / y_est[i + I];
+ theta_tilde =
+ ((theta_tilde << M) + y_est[i + I]) / y_est[i + I];
+ theta_tilde =
+ ((theta_tilde << M) + y_est[i + I]) / y_est[i + I];
+ beta_raw = beta_raw + B1_tmp[i] * theta_tilde;
+ alpha_raw = alpha_raw + B2_tmp[i] * theta_tilde;
+ }
+
+ Q_beta = find_proper_scale(find_expn(abs(beta_raw)), 10);
+ Q_alpha = find_proper_scale(find_expn(abs(alpha_raw)), 10);
+ beta_raw = beta_raw / (1 << Q_beta);
+ alpha_raw = alpha_raw / (1 << Q_alpha);
+
+ alpha = (alpha_raw << 10) / scale_B;
+ beta = (beta_raw << 10) / scale_B;
+ order_1 = 3 * M - Q_x - Q_B1 - Q_beta + 10 + Q_scale_B + 5;
+ order_2 = 3 * M - Q_x - Q_B2 - Q_alpha + 10 + Q_scale_B + 5;
+ order1_5x = order_1 / 5;
+ order2_3x = order_2 / 3;
+ order1_5x_rem = order_1 - 5 * order1_5x;
+ order2_3x_rem = order_2 - 3 * order2_3x;
+
+ for (i = 0; i < PAPRD_TABLE_SZ; i++) {
+ int PA_angle;
+
+ /* pa_table[4] is calculated from PA_angle for i=5 */
+ if (i == 4)
+ continue;
+
+ tmp = i * 32;
+ if (beta > 0)
+ y5 = (((beta * tmp - 64) >> 6) -
+ (1 << order1_5x)) / (1 << order1_5x);
+ else
+ y5 = ((((beta * tmp - 64) >> 6) +
+ (1 << order1_5x)) / (1 << order1_5x));
+
+ y5 = (y5 * tmp) / (1 << order1_5x);
+ y5 = (y5 * tmp) / (1 << order1_5x);
+ y5 = (y5 * tmp) / (1 << order1_5x);
+ y5 = (y5 * tmp) / (1 << order1_5x);
+ y5 = y5 / (1 << order1_5x_rem);
+
+ if (beta > 0)
+ y3 = (alpha * tmp -
+ (1 << order2_3x)) / (1 << order2_3x);
+ else
+ y3 = (alpha * tmp +
+ (1 << order2_3x)) / (1 << order2_3x);
+ y3 = (y3 * tmp) / (1 << order2_3x);
+ y3 = (y3 * tmp) / (1 << order2_3x);
+ y3 = y3 / (1 << order2_3x_rem);
+
+ if (i < 4) {
+ PA_angle = 0;
+ } else {
+ PA_angle = y5 + y3;
+ if (PA_angle < -150)
+ PA_angle = -150;
+ else if (PA_angle > 150)
+ PA_angle = 150;
+ }
+
+ pa_table[i] = ((PA_in[i] & 0x7ff) << 11) + (PA_angle & 0x7ff);
+ if (i == 5) {
+ PA_angle = (PA_angle + 2) >> 1;
+ pa_table[i - 1] = ((PA_in[i - 1] & 0x7ff) << 11) +
+ (PA_angle & 0x7ff);
+ }
+ }
+
+ *gain = G_fxp;
+ return true;
+}
+
+void ar9003_paprd_populate_single_table(struct ath_hw *ah,
+ struct ath9k_channel *chan, int chain)
+{
+ u32 *paprd_table_val = chan->pa_table[chain];
+ u32 small_signal_gain = chan->small_signal_gain[chain];
+ u32 training_power;
+ u32 reg = 0;
+ int i;
+
+ training_power =
+ REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
+ AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
+ training_power -= 4;
+
+ if (chain == 0)
+ reg = AR_PHY_PAPRD_MEM_TAB_B0;
+ else if (chain == 1)
+ reg = AR_PHY_PAPRD_MEM_TAB_B1;
+ else if (chain == 2)
+ reg = AR_PHY_PAPRD_MEM_TAB_B2;
+
+ for (i = 0; i < PAPRD_TABLE_SZ; i++) {
+ REG_WRITE(ah, reg, paprd_table_val[i]);
+ reg = reg + 4;
+ }
+
+ if (chain == 0)
+ reg = AR_PHY_PA_GAIN123_B0;
+ else if (chain == 1)
+ reg = AR_PHY_PA_GAIN123_B1;
+ else
+ reg = AR_PHY_PA_GAIN123_B2;
+
+ REG_RMW_FIELD(ah, reg, AR_PHY_PA_GAIN123_PA_GAIN1, small_signal_gain);
+
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B0,
+ AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL,
+ training_power);
+
+ REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL1_B1,
+ AR_PHY_PAPRD_CTRL1_PAPRD_POWER_AT_AM2AM_CAL,
+ training_power);
+
+ 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)
+{
+
+ unsigned int i, desired_gain, gain_index;
+ unsigned int train_power;
+
+ train_power = REG_READ_FIELD(ah, AR_PHY_POWERTX_RATE5,
+ AR_PHY_POWERTX_RATE5_POWERTXHT20_0);
+
+ train_power = train_power - 4;
+
+ desired_gain = ar9003_get_desired_gain(ah, chain, train_power);
+
+ gain_index = 0;
+ for (i = 0; i < 32; i++) {
+ if (ah->paprd_gain_table_index[i] >= desired_gain)
+ break;
+ gain_index++;
+ }
+
+ ar9003_tx_force_gain(ah, gain_index);
+
+ 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);
+
+int ar9003_paprd_create_curve(struct ath_hw *ah, struct ath9k_channel *chan,
+ int chain)
+{
+ u16 *small_signal_gain = &chan->small_signal_gain[chain];
+ u32 *pa_table = chan->pa_table[chain];
+ u32 *data_L, *data_U;
+ int i, status = 0;
+ u32 *buf;
+ u32 reg;
+
+ memset(chan->pa_table[chain], 0, sizeof(chan->pa_table[chain]));
+
+ buf = kmalloc(2 * 48 * sizeof(u32), GFP_ATOMIC);
+ if (!buf)
+ return -ENOMEM;
+
+ data_L = &buf[0];
+ data_U = &buf[48];
+
+ REG_CLR_BIT(ah, AR_PHY_CHAN_INFO_MEMORY,
+ AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ);
+
+ reg = AR_PHY_CHAN_INFO_TAB_0;
+ for (i = 0; i < 48; i++)
+ data_L[i] = REG_READ(ah, reg + (i << 2));
+
+ REG_SET_BIT(ah, AR_PHY_CHAN_INFO_MEMORY,
+ AR_PHY_CHAN_INFO_MEMORY_CHANINFOMEM_S2_READ);
+
+ for (i = 0; i < 48; i++)
+ data_U[i] = REG_READ(ah, reg + (i << 2));
+
+ if (!create_pa_curve(data_L, data_U, pa_table, small_signal_gain))
+ status = -2;
+
+ REG_CLR_BIT(ah, AR_PHY_PAPRD_TRAINER_STAT1,
+ AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
+
+ kfree(buf);
+
+ return status;
+}
+EXPORT_SYMBOL(ar9003_paprd_create_curve);
+
+int ar9003_paprd_init_table(struct ath_hw *ah)
+{
+ ar9003_paprd_setup_single_table(ah);
+ ar9003_paprd_get_gain_table(ah);
+ return 0;
+}
+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,
+ AR_PHY_PAPRD_TRAINER_STAT1_PAPRD_TRAIN_DONE);
+}
+EXPORT_SYMBOL(ar9003_paprd_is_done);
projects / kernel / kernel-generic.git / commitdiff