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path: root/drivers/net/wireless/ath/ath9k/ar9003_calib.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_calib.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_calib.c650
1 files changed, 573 insertions, 77 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 6988e1d081f..ac8301ef524 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -23,10 +23,11 @@
#define MAX_MEASUREMENT MAX_IQCAL_MEASUREMENT
#define MAX_MAG_DELTA 11
#define MAX_PHS_DELTA 10
+#define MAXIQCAL 3
struct coeff {
- int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT];
- int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT];
+ int mag_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL];
+ int phs_coeff[AR9300_MAX_CHAINS][MAX_MEASUREMENT][MAXIQCAL];
int iqc_coeff[2];
};
@@ -326,6 +327,224 @@ static void ar9003_hw_init_cal_settings(struct ath_hw *ah)
ah->supp_cals = IQ_MISMATCH_CAL;
}
+#define OFF_UPPER_LT 24
+#define OFF_LOWER_LT 7
+
+static bool ar9003_hw_dynamic_osdac_selection(struct ath_hw *ah,
+ bool txiqcal_done)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ int ch0_done, osdac_ch0, dc_off_ch0_i1, dc_off_ch0_q1, dc_off_ch0_i2,
+ dc_off_ch0_q2, dc_off_ch0_i3, dc_off_ch0_q3;
+ int ch1_done, osdac_ch1, dc_off_ch1_i1, dc_off_ch1_q1, dc_off_ch1_i2,
+ dc_off_ch1_q2, dc_off_ch1_i3, dc_off_ch1_q3;
+ int ch2_done, osdac_ch2, dc_off_ch2_i1, dc_off_ch2_q1, dc_off_ch2_i2,
+ dc_off_ch2_q2, dc_off_ch2_i3, dc_off_ch2_q3;
+ bool status;
+ u32 temp, val;
+
+ /*
+ * Clear offset and IQ calibration, run AGC cal.
+ */
+ REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_OFFSET_CAL);
+ REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
+ AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
+ REG_WRITE(ah, AR_PHY_AGC_CONTROL,
+ REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
+
+ status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_CAL,
+ 0, AH_WAIT_TIMEOUT);
+ if (!status) {
+ ath_dbg(common, CALIBRATE,
+ "AGC cal without offset cal failed to complete in 1ms");
+ return false;
+ }
+
+ /*
+ * Allow only offset calibration and disable the others
+ * (Carrier Leak calibration, TX Filter calibration and
+ * Peak Detector offset calibration).
+ */
+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_OFFSET_CAL);
+ REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
+ AR_PHY_CL_CAL_ENABLE);
+ REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_FLTR_CAL);
+ REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_PKDET_CAL);
+
+ ch0_done = 0;
+ ch1_done = 0;
+ ch2_done = 0;
+
+ while ((ch0_done == 0) || (ch1_done == 0) || (ch2_done == 0)) {
+ osdac_ch0 = (REG_READ(ah, AR_PHY_65NM_CH0_BB1) >> 30) & 0x3;
+ osdac_ch1 = (REG_READ(ah, AR_PHY_65NM_CH1_BB1) >> 30) & 0x3;
+ osdac_ch2 = (REG_READ(ah, AR_PHY_65NM_CH2_BB1) >> 30) & 0x3;
+
+ REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
+
+ REG_WRITE(ah, AR_PHY_AGC_CONTROL,
+ REG_READ(ah, AR_PHY_AGC_CONTROL) | AR_PHY_AGC_CONTROL_CAL);
+
+ status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_CAL,
+ 0, AH_WAIT_TIMEOUT);
+ if (!status) {
+ ath_dbg(common, CALIBRATE,
+ "DC offset cal failed to complete in 1ms");
+ return false;
+ }
+
+ REG_CLR_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
+
+ /*
+ * High gain.
+ */
+ REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (1 << 8)));
+ REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (1 << 8)));
+ REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (1 << 8)));
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
+ dc_off_ch0_i1 = (temp >> 26) & 0x1f;
+ dc_off_ch0_q1 = (temp >> 21) & 0x1f;
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
+ dc_off_ch1_i1 = (temp >> 26) & 0x1f;
+ dc_off_ch1_q1 = (temp >> 21) & 0x1f;
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
+ dc_off_ch2_i1 = (temp >> 26) & 0x1f;
+ dc_off_ch2_q1 = (temp >> 21) & 0x1f;
+
+ /*
+ * Low gain.
+ */
+ REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (2 << 8)));
+ REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (2 << 8)));
+ REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (2 << 8)));
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
+ dc_off_ch0_i2 = (temp >> 26) & 0x1f;
+ dc_off_ch0_q2 = (temp >> 21) & 0x1f;
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
+ dc_off_ch1_i2 = (temp >> 26) & 0x1f;
+ dc_off_ch1_q2 = (temp >> 21) & 0x1f;
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
+ dc_off_ch2_i2 = (temp >> 26) & 0x1f;
+ dc_off_ch2_q2 = (temp >> 21) & 0x1f;
+
+ /*
+ * Loopback.
+ */
+ REG_WRITE(ah, AR_PHY_65NM_CH0_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH0_BB3) & 0xfffffcff) | (3 << 8)));
+ REG_WRITE(ah, AR_PHY_65NM_CH1_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH1_BB3) & 0xfffffcff) | (3 << 8)));
+ REG_WRITE(ah, AR_PHY_65NM_CH2_BB3,
+ ((REG_READ(ah, AR_PHY_65NM_CH2_BB3) & 0xfffffcff) | (3 << 8)));
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH0_BB3);
+ dc_off_ch0_i3 = (temp >> 26) & 0x1f;
+ dc_off_ch0_q3 = (temp >> 21) & 0x1f;
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH1_BB3);
+ dc_off_ch1_i3 = (temp >> 26) & 0x1f;
+ dc_off_ch1_q3 = (temp >> 21) & 0x1f;
+
+ temp = REG_READ(ah, AR_PHY_65NM_CH2_BB3);
+ dc_off_ch2_i3 = (temp >> 26) & 0x1f;
+ dc_off_ch2_q3 = (temp >> 21) & 0x1f;
+
+ if ((dc_off_ch0_i1 > OFF_UPPER_LT) || (dc_off_ch0_i1 < OFF_LOWER_LT) ||
+ (dc_off_ch0_i2 > OFF_UPPER_LT) || (dc_off_ch0_i2 < OFF_LOWER_LT) ||
+ (dc_off_ch0_i3 > OFF_UPPER_LT) || (dc_off_ch0_i3 < OFF_LOWER_LT) ||
+ (dc_off_ch0_q1 > OFF_UPPER_LT) || (dc_off_ch0_q1 < OFF_LOWER_LT) ||
+ (dc_off_ch0_q2 > OFF_UPPER_LT) || (dc_off_ch0_q2 < OFF_LOWER_LT) ||
+ (dc_off_ch0_q3 > OFF_UPPER_LT) || (dc_off_ch0_q3 < OFF_LOWER_LT)) {
+ if (osdac_ch0 == 3) {
+ ch0_done = 1;
+ } else {
+ osdac_ch0++;
+
+ val = REG_READ(ah, AR_PHY_65NM_CH0_BB1) & 0x3fffffff;
+ val |= (osdac_ch0 << 30);
+ REG_WRITE(ah, AR_PHY_65NM_CH0_BB1, val);
+
+ ch0_done = 0;
+ }
+ } else {
+ ch0_done = 1;
+ }
+
+ if ((dc_off_ch1_i1 > OFF_UPPER_LT) || (dc_off_ch1_i1 < OFF_LOWER_LT) ||
+ (dc_off_ch1_i2 > OFF_UPPER_LT) || (dc_off_ch1_i2 < OFF_LOWER_LT) ||
+ (dc_off_ch1_i3 > OFF_UPPER_LT) || (dc_off_ch1_i3 < OFF_LOWER_LT) ||
+ (dc_off_ch1_q1 > OFF_UPPER_LT) || (dc_off_ch1_q1 < OFF_LOWER_LT) ||
+ (dc_off_ch1_q2 > OFF_UPPER_LT) || (dc_off_ch1_q2 < OFF_LOWER_LT) ||
+ (dc_off_ch1_q3 > OFF_UPPER_LT) || (dc_off_ch1_q3 < OFF_LOWER_LT)) {
+ if (osdac_ch1 == 3) {
+ ch1_done = 1;
+ } else {
+ osdac_ch1++;
+
+ val = REG_READ(ah, AR_PHY_65NM_CH1_BB1) & 0x3fffffff;
+ val |= (osdac_ch1 << 30);
+ REG_WRITE(ah, AR_PHY_65NM_CH1_BB1, val);
+
+ ch1_done = 0;
+ }
+ } else {
+ ch1_done = 1;
+ }
+
+ if ((dc_off_ch2_i1 > OFF_UPPER_LT) || (dc_off_ch2_i1 < OFF_LOWER_LT) ||
+ (dc_off_ch2_i2 > OFF_UPPER_LT) || (dc_off_ch2_i2 < OFF_LOWER_LT) ||
+ (dc_off_ch2_i3 > OFF_UPPER_LT) || (dc_off_ch2_i3 < OFF_LOWER_LT) ||
+ (dc_off_ch2_q1 > OFF_UPPER_LT) || (dc_off_ch2_q1 < OFF_LOWER_LT) ||
+ (dc_off_ch2_q2 > OFF_UPPER_LT) || (dc_off_ch2_q2 < OFF_LOWER_LT) ||
+ (dc_off_ch2_q3 > OFF_UPPER_LT) || (dc_off_ch2_q3 < OFF_LOWER_LT)) {
+ if (osdac_ch2 == 3) {
+ ch2_done = 1;
+ } else {
+ osdac_ch2++;
+
+ val = REG_READ(ah, AR_PHY_65NM_CH2_BB1) & 0x3fffffff;
+ val |= (osdac_ch2 << 30);
+ REG_WRITE(ah, AR_PHY_65NM_CH2_BB1, val);
+
+ ch2_done = 0;
+ }
+ } else {
+ ch2_done = 1;
+ }
+ }
+
+ REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_OFFSET_CAL);
+ REG_SET_BIT(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
+
+ /*
+ * We don't need to check txiqcal_done here since it is always
+ * set for AR9550.
+ */
+ REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
+ AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
+
+ return true;
+}
+
/*
* solve 4x4 linear equation used in loopback iq cal.
*/
@@ -347,7 +566,7 @@ static bool ar9003_hw_solve_iq_cal(struct ath_hw *ah,
const s32 result_shift = 1 << 15;
struct ath_common *common = ath9k_hw_common(ah);
- f2 = (f1 * f1 + f3 * f3) / result_shift;
+ f2 = ((f1 >> 3) * (f1 >> 3) + (f3 >> 3) * (f3 >> 3)) >> 9;
if (!f2) {
ath_dbg(common, CALIBRATE, "Divide by 0\n");
@@ -437,9 +656,6 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
if (i2_m_q2_a0_d1 > 0x800)
i2_m_q2_a0_d1 = -((0xfff - i2_m_q2_a0_d1) + 1);
- if (i2_p_q2_a0_d1 > 0x800)
- i2_p_q2_a0_d1 = -((0xfff - i2_p_q2_a0_d1) + 1);
-
if (iq_corr_a0_d1 > 0x800)
iq_corr_a0_d1 = -((0xfff - iq_corr_a0_d1) + 1);
@@ -482,6 +698,19 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
return false;
}
+ if ((i2_p_q2_a0_d0 < 1024) || (i2_p_q2_a0_d0 > 2047) ||
+ (i2_p_q2_a1_d0 < 0) || (i2_p_q2_a1_d1 < 0) ||
+ (i2_p_q2_a0_d0 <= i2_m_q2_a0_d0) ||
+ (i2_p_q2_a0_d0 <= iq_corr_a0_d0) ||
+ (i2_p_q2_a0_d1 <= i2_m_q2_a0_d1) ||
+ (i2_p_q2_a0_d1 <= iq_corr_a0_d1) ||
+ (i2_p_q2_a1_d0 <= i2_m_q2_a1_d0) ||
+ (i2_p_q2_a1_d0 <= iq_corr_a1_d0) ||
+ (i2_p_q2_a1_d1 <= i2_m_q2_a1_d1) ||
+ (i2_p_q2_a1_d1 <= iq_corr_a1_d1)) {
+ return false;
+ }
+
mag_a0_d0 = (i2_m_q2_a0_d0 * res_scale) / i2_p_q2_a0_d0;
phs_a0_d0 = (iq_corr_a0_d0 * res_scale) / i2_p_q2_a0_d0;
@@ -569,7 +798,7 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
if (q_q_coff > 63)
q_q_coff = 63;
- iqc_coeff[0] = (q_q_coff * 128) + q_i_coff;
+ iqc_coeff[0] = (q_q_coff * 128) + (0x7f & q_i_coff);
ath_dbg(common, CALIBRATE, "tx chain %d: iq corr coeff=%x\n",
chain_idx, iqc_coeff[0]);
@@ -600,7 +829,7 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
if (q_q_coff > 63)
q_q_coff = 63;
- iqc_coeff[1] = (q_q_coff * 128) + q_i_coff;
+ iqc_coeff[1] = (q_q_coff * 128) + (0x7f & q_i_coff);
ath_dbg(common, CALIBRATE, "rx chain %d: iq corr coeff=%x\n",
chain_idx, iqc_coeff[1]);
@@ -608,7 +837,8 @@ static bool ar9003_hw_calc_iq_corr(struct ath_hw *ah,
return true;
}
-static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
+static void ar9003_hw_detect_outlier(int mp_coeff[][MAXIQCAL],
+ int nmeasurement,
int max_delta)
{
int mp_max = -64, max_idx = 0;
@@ -617,20 +847,20 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
/* find min/max mismatch across all calibrated gains */
for (i = 0; i < nmeasurement; i++) {
- if (mp_coeff[i] > mp_max) {
- mp_max = mp_coeff[i];
+ if (mp_coeff[i][0] > mp_max) {
+ mp_max = mp_coeff[i][0];
max_idx = i;
- } else if (mp_coeff[i] < mp_min) {
- mp_min = mp_coeff[i];
+ } else if (mp_coeff[i][0] < mp_min) {
+ mp_min = mp_coeff[i][0];
min_idx = i;
}
}
/* find average (exclude max abs value) */
for (i = 0; i < nmeasurement; i++) {
- if ((abs(mp_coeff[i]) < abs(mp_max)) ||
- (abs(mp_coeff[i]) < abs(mp_min))) {
- mp_avg += mp_coeff[i];
+ if ((abs(mp_coeff[i][0]) < abs(mp_max)) ||
+ (abs(mp_coeff[i][0]) < abs(mp_min))) {
+ mp_avg += mp_coeff[i][0];
mp_count++;
}
}
@@ -642,7 +872,7 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
if (mp_count)
mp_avg /= mp_count;
else
- mp_avg = mp_coeff[nmeasurement - 1];
+ mp_avg = mp_coeff[nmeasurement - 1][0];
/* detect outlier */
if (abs(mp_max - mp_min) > max_delta) {
@@ -651,15 +881,16 @@ static void ar9003_hw_detect_outlier(int *mp_coeff, int nmeasurement,
else
outlier_idx = min_idx;
- mp_coeff[outlier_idx] = mp_avg;
+ mp_coeff[outlier_idx][0] = mp_avg;
}
}
-static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah,
- struct coeff *coeff,
- bool is_reusable)
+static void ar9003_hw_tx_iq_cal_outlier_detection(struct ath_hw *ah,
+ struct coeff *coeff,
+ bool is_reusable)
{
int i, im, nmeasurement;
+ int magnitude, phase;
u32 tx_corr_coeff[MAX_MEASUREMENT][AR9300_MAX_CHAINS];
struct ath9k_hw_cal_data *caldata = ah->caldata;
@@ -689,21 +920,30 @@ static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah,
if (nmeasurement > MAX_MEASUREMENT)
nmeasurement = MAX_MEASUREMENT;
- /* detect outlier only if nmeasurement > 1 */
- if (nmeasurement > 1) {
- /* Detect magnitude outlier */
- ar9003_hw_detect_outlier(coeff->mag_coeff[i],
- nmeasurement, MAX_MAG_DELTA);
-
- /* Detect phase outlier */
- ar9003_hw_detect_outlier(coeff->phs_coeff[i],
- nmeasurement, MAX_PHS_DELTA);
+ /*
+ * Skip normal outlier detection for AR9550.
+ */
+ if (!AR_SREV_9550(ah)) {
+ /* detect outlier only if nmeasurement > 1 */
+ if (nmeasurement > 1) {
+ /* Detect magnitude outlier */
+ ar9003_hw_detect_outlier(coeff->mag_coeff[i],
+ nmeasurement,
+ MAX_MAG_DELTA);
+
+ /* Detect phase outlier */
+ ar9003_hw_detect_outlier(coeff->phs_coeff[i],
+ nmeasurement,
+ MAX_PHS_DELTA);
+ }
}
for (im = 0; im < nmeasurement; im++) {
+ magnitude = coeff->mag_coeff[i][im][0];
+ phase = coeff->phs_coeff[i][im][0];
- coeff->iqc_coeff[0] = (coeff->mag_coeff[i][im] & 0x7f) |
- ((coeff->phs_coeff[i][im] & 0x7f) << 7);
+ coeff->iqc_coeff[0] =
+ (phase & 0x7f) | ((magnitude & 0x7f) << 7);
if ((im % 2) == 0)
REG_RMW_FIELD(ah, tx_corr_coeff[im][i],
@@ -727,8 +967,12 @@ static void ar9003_hw_tx_iqcal_load_avg_2_passes(struct ath_hw *ah,
REG_RMW_FIELD(ah, AR_PHY_RX_IQCAL_CORR_B0,
AR_PHY_RX_IQCAL_CORR_B0_LOOPBACK_IQCORR_EN, 0x1);
- if (caldata)
- caldata->done_txiqcal_once = is_reusable;
+ if (caldata) {
+ if (is_reusable)
+ set_bit(TXIQCAL_DONE, &caldata->cal_flags);
+ else
+ clear_bit(TXIQCAL_DONE, &caldata->cal_flags);
+ }
return;
}
@@ -756,7 +1000,63 @@ static bool ar9003_hw_tx_iq_cal_run(struct ath_hw *ah)
return true;
}
-static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
+static void __ar955x_tx_iq_cal_sort(struct ath_hw *ah,
+ struct coeff *coeff,
+ int i, int nmeasurement)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ int im, ix, iy, temp;
+
+ for (im = 0; im < nmeasurement; im++) {
+ for (ix = 0; ix < MAXIQCAL - 1; ix++) {
+ for (iy = ix + 1; iy <= MAXIQCAL - 1; iy++) {
+ if (coeff->mag_coeff[i][im][iy] <
+ coeff->mag_coeff[i][im][ix]) {
+ temp = coeff->mag_coeff[i][im][ix];
+ coeff->mag_coeff[i][im][ix] =
+ coeff->mag_coeff[i][im][iy];
+ coeff->mag_coeff[i][im][iy] = temp;
+ }
+ if (coeff->phs_coeff[i][im][iy] <
+ coeff->phs_coeff[i][im][ix]) {
+ temp = coeff->phs_coeff[i][im][ix];
+ coeff->phs_coeff[i][im][ix] =
+ coeff->phs_coeff[i][im][iy];
+ coeff->phs_coeff[i][im][iy] = temp;
+ }
+ }
+ }
+ coeff->mag_coeff[i][im][0] = coeff->mag_coeff[i][im][MAXIQCAL / 2];
+ coeff->phs_coeff[i][im][0] = coeff->phs_coeff[i][im][MAXIQCAL / 2];
+
+ ath_dbg(common, CALIBRATE,
+ "IQCAL: Median [ch%d][gain%d]: mag = %d phase = %d\n",
+ i, im,
+ coeff->mag_coeff[i][im][0],
+ coeff->phs_coeff[i][im][0]);
+ }
+}
+
+static bool ar955x_tx_iq_cal_median(struct ath_hw *ah,
+ struct coeff *coeff,
+ int iqcal_idx,
+ int nmeasurement)
+{
+ int i;
+
+ if ((iqcal_idx + 1) != MAXIQCAL)
+ return false;
+
+ for (i = 0; i < AR9300_MAX_CHAINS; i++) {
+ __ar955x_tx_iq_cal_sort(ah, coeff, i, nmeasurement);
+ }
+
+ return true;
+}
+
+static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah,
+ int iqcal_idx,
+ bool is_reusable)
{
struct ath_common *common = ath9k_hw_common(ah);
const u32 txiqcal_status[AR9300_MAX_CHAINS] = {
@@ -769,10 +1069,11 @@ static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
AR_PHY_CHAN_INFO_TAB_1,
AR_PHY_CHAN_INFO_TAB_2,
};
- struct coeff coeff;
+ static struct coeff coeff;
s32 iq_res[6];
int i, im, j;
- int nmeasurement;
+ int nmeasurement = 0;
+ bool outlier_detect = true;
for (i = 0; i < AR9300_MAX_CHAINS; i++) {
if (!(ah->txchainmask & (1 << i)))
@@ -830,17 +1131,23 @@ static void ar9003_hw_tx_iq_cal_post_proc(struct ath_hw *ah, bool is_reusable)
goto tx_iqcal_fail;
}
- coeff.mag_coeff[i][im] = coeff.iqc_coeff[0] & 0x7f;
- coeff.phs_coeff[i][im] =
+ coeff.phs_coeff[i][im][iqcal_idx] =
+ coeff.iqc_coeff[0] & 0x7f;
+ coeff.mag_coeff[i][im][iqcal_idx] =
(coeff.iqc_coeff[0] >> 7) & 0x7f;
- if (coeff.mag_coeff[i][im] > 63)
- coeff.mag_coeff[i][im] -= 128;
- if (coeff.phs_coeff[i][im] > 63)
- coeff.phs_coeff[i][im] -= 128;
+ if (coeff.mag_coeff[i][im][iqcal_idx] > 63)
+ coeff.mag_coeff[i][im][iqcal_idx] -= 128;
+ if (coeff.phs_coeff[i][im][iqcal_idx] > 63)
+ coeff.phs_coeff[i][im][iqcal_idx] -= 128;
}
}
- ar9003_hw_tx_iqcal_load_avg_2_passes(ah, &coeff, is_reusable);
+
+ if (AR_SREV_9550(ah))
+ outlier_detect = ar955x_tx_iq_cal_median(ah, &coeff,
+ iqcal_idx, nmeasurement);
+ if (outlier_detect)
+ ar9003_hw_tx_iq_cal_outlier_detection(ah, &coeff, is_reusable);
return;
@@ -894,7 +1201,7 @@ static void ar9003_hw_tx_iq_cal_reload(struct ath_hw *ah)
static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
{
- int offset[8], total = 0, test;
+ int offset[8] = {0}, total = 0, test;
int agc_out, i;
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_GAINSTAGES(chain),
@@ -919,12 +1226,18 @@ static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
AR_PHY_65NM_RXRF_AGC_AGC_ON_OVR, 0x1);
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0x1);
- if (is_2g)
- REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
- AR_PHY_65NM_RXRF_AGC_AGC2G_DBDAC_OVR, 0x0);
- else
+
+ if (AR_SREV_9330_11(ah)) {
REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
- AR_PHY_65NM_RXRF_AGC_AGC5G_DBDAC_OVR, 0x0);
+ AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR, 0x0);
+ } else {
+ if (is_2g)
+ REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
+ AR_PHY_65NM_RXRF_AGC_AGC2G_DBDAC_OVR, 0x0);
+ else
+ REG_RMW_FIELD(ah, AR_PHY_65NM_RXRF_AGC(chain),
+ AR_PHY_65NM_RXRF_AGC_AGC5G_DBDAC_OVR, 0x0);
+ }
for (i = 6; i > 0; i--) {
offset[i] = BIT(i - 1);
@@ -960,19 +1273,45 @@ static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g)
AR_PHY_65NM_RXRF_AGC_AGC_CAL_OVR, 0);
}
-static void ar9003_hw_do_manual_peak_cal(struct ath_hw *ah,
- struct ath9k_channel *chan)
+static void ar9003_hw_do_pcoem_manual_peak_cal(struct ath_hw *ah,
+ struct ath9k_channel *chan,
+ bool run_rtt_cal)
{
+ struct ath9k_hw_cal_data *caldata = ah->caldata;
int i;
if (!AR_SREV_9462(ah) && !AR_SREV_9565(ah) && !AR_SREV_9485(ah))
return;
+ if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && !run_rtt_cal)
+ return;
+
for (i = 0; i < AR9300_MAX_CHAINS; i++) {
if (!(ah->rxchainmask & (1 << i)))
continue;
ar9003_hw_manual_peak_cal(ah, i, IS_CHAN_2GHZ(chan));
}
+
+ if (caldata)
+ set_bit(SW_PKDET_DONE, &caldata->cal_flags);
+
+ if ((ah->caps.hw_caps & ATH9K_HW_CAP_RTT) && caldata) {
+ if (IS_CHAN_2GHZ(chan)){
+ caldata->caldac[0] = REG_READ_FIELD(ah,
+ AR_PHY_65NM_RXRF_AGC(0),
+ AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
+ caldata->caldac[1] = REG_READ_FIELD(ah,
+ AR_PHY_65NM_RXRF_AGC(1),
+ AR_PHY_65NM_RXRF_AGC_AGC2G_CALDAC_OVR);
+ } else {
+ caldata->caldac[0] = REG_READ_FIELD(ah,
+ AR_PHY_65NM_RXRF_AGC(0),
+ AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
+ caldata->caldac[1] = REG_READ_FIELD(ah,
+ AR_PHY_65NM_RXRF_AGC(1),
+ AR_PHY_65NM_RXRF_AGC_AGC5G_CALDAC_OVR);
+ }
+ }
}
static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
@@ -990,7 +1329,7 @@ static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
txclcal_done = !!(REG_READ(ah, AR_PHY_AGC_CONTROL) &
AR_PHY_AGC_CONTROL_CLC_SUCCESS);
- if (caldata->done_txclcal_once) {
+ if (test_bit(TXCLCAL_DONE, &caldata->cal_flags)) {
for (i = 0; i < AR9300_MAX_CHAINS; i++) {
if (!(ah->txchainmask & (1 << i)))
continue;
@@ -1006,19 +1345,20 @@ static void ar9003_hw_cl_cal_post_proc(struct ath_hw *ah, bool is_reusable)
caldata->tx_clcal[i][j] =
REG_READ(ah, CL_TAB_ENTRY(cl_idx[i]));
}
- caldata->done_txclcal_once = true;
+ set_bit(TXCLCAL_DONE, &caldata->cal_flags);
}
}
-static bool ar9003_hw_init_cal(struct ath_hw *ah,
- struct ath9k_channel *chan)
+static bool ar9003_hw_init_cal_pcoem(struct ath_hw *ah,
+ struct ath9k_channel *chan)
{
struct ath_common *common = ath9k_hw_common(ah);
struct ath9k_hw_cal_data *caldata = ah->caldata;
bool txiqcal_done = false;
bool is_reusable = true, status = true;
- bool run_rtt_cal = false, run_agc_cal, sep_iq_cal = false;
+ bool run_rtt_cal = false, run_agc_cal;
bool rtt = !!(ah->caps.hw_caps & ATH9K_HW_CAP_RTT);
+ u32 rx_delay = 0;
u32 agc_ctrl = 0, agc_supp_cals = AR_PHY_AGC_CONTROL_OFFSET_CAL |
AR_PHY_AGC_CONTROL_FLTR_CAL |
AR_PHY_AGC_CONTROL_PKDET_CAL;
@@ -1042,17 +1382,22 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
ar9003_hw_rtt_clear_hist(ah);
}
- if (rtt && !run_rtt_cal) {
- agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
- agc_supp_cals &= agc_ctrl;
- agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
- AR_PHY_AGC_CONTROL_FLTR_CAL |
- AR_PHY_AGC_CONTROL_PKDET_CAL);
- REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
+ if (rtt) {
+ if (!run_rtt_cal) {
+ agc_ctrl = REG_READ(ah, AR_PHY_AGC_CONTROL);
+ agc_supp_cals &= agc_ctrl;
+ agc_ctrl &= ~(AR_PHY_AGC_CONTROL_OFFSET_CAL |
+ AR_PHY_AGC_CONTROL_FLTR_CAL |
+ AR_PHY_AGC_CONTROL_PKDET_CAL);
+ REG_WRITE(ah, AR_PHY_AGC_CONTROL, agc_ctrl);
+ } else {
+ if (ah->ah_flags & AH_FASTCC)
+ run_agc_cal = true;
+ }
}
if (ah->enabled_cals & TX_CL_CAL) {
- if (caldata && caldata->done_txclcal_once)
+ if (caldata && test_bit(TXCLCAL_DONE, &caldata->cal_flags))
REG_CLR_BIT(ah, AR_PHY_CL_CAL_CTL,
AR_PHY_CL_CAL_ENABLE);
else {
@@ -1076,26 +1421,25 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
* AGC calibration
*/
if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
- if (caldata && !caldata->done_txiqcal_once)
+ if (caldata && !test_bit(TXIQCAL_DONE, &caldata->cal_flags))
REG_SET_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
else
REG_CLR_BIT(ah, AR_PHY_TX_IQCAL_CONTROL_0,
AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL);
txiqcal_done = run_agc_cal = true;
- } else if (caldata && !caldata->done_txiqcal_once) {
- run_agc_cal = true;
- sep_iq_cal = true;
}
skip_tx_iqcal:
if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
ar9003_mci_init_cal_req(ah, &is_reusable);
- if (sep_iq_cal) {
- txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
+ if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
+ rx_delay = REG_READ(ah, AR_PHY_RX_DELAY);
+ /* Disable BB_active */
REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
udelay(5);
+ REG_WRITE(ah, AR_PHY_RX_DELAY, AR_PHY_RX_DELAY_DELAY);
REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
}
@@ -1110,7 +1454,12 @@ skip_tx_iqcal:
AR_PHY_AGC_CONTROL_CAL,
0, AH_WAIT_TIMEOUT);
- ar9003_hw_do_manual_peak_cal(ah, chan);
+ ar9003_hw_do_pcoem_manual_peak_cal(ah, chan, run_rtt_cal);
+ }
+
+ if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) {
+ REG_WRITE(ah, AR_PHY_RX_DELAY, rx_delay);
+ udelay(5);
}
if (ath9k_hw_mci_is_enabled(ah) && IS_CHAN_2GHZ(chan) && run_agc_cal)
@@ -1132,20 +1481,24 @@ skip_tx_iqcal:
}
if (txiqcal_done)
- ar9003_hw_tx_iq_cal_post_proc(ah, is_reusable);
- else if (caldata && caldata->done_txiqcal_once)
+ ar9003_hw_tx_iq_cal_post_proc(ah, 0, is_reusable);
+ else if (caldata && test_bit(TXIQCAL_DONE, &caldata->cal_flags))
ar9003_hw_tx_iq_cal_reload(ah);
ar9003_hw_cl_cal_post_proc(ah, is_reusable);
if (run_rtt_cal && caldata) {
if (is_reusable) {
- if (!ath9k_hw_rfbus_req(ah))
+ if (!ath9k_hw_rfbus_req(ah)) {
ath_err(ath9k_hw_common(ah),
"Could not stop baseband\n");
- else
+ } else {
ar9003_hw_rtt_fill_hist(ah);
+ if (test_bit(SW_PKDET_DONE, &caldata->cal_flags))
+ ar9003_hw_rtt_load_hist(ah);
+ }
+
ath9k_hw_rfbus_done(ah);
}
@@ -1174,13 +1527,156 @@ skip_tx_iqcal:
return true;
}
+static bool do_ar9003_agc_cal(struct ath_hw *ah)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ bool status;
+
+ REG_WRITE(ah, AR_PHY_AGC_CONTROL,
+ REG_READ(ah, AR_PHY_AGC_CONTROL) |
+ AR_PHY_AGC_CONTROL_CAL);
+
+ status = ath9k_hw_wait(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_CAL,
+ 0, AH_WAIT_TIMEOUT);
+ if (!status) {
+ ath_dbg(common, CALIBRATE,
+ "offset calibration failed to complete in %d ms,"
+ "noisy environment?\n",
+ AH_WAIT_TIMEOUT / 1000);
+ return false;
+ }
+
+ return true;
+}
+
+static bool ar9003_hw_init_cal_soc(struct ath_hw *ah,
+ struct ath9k_channel *chan)
+{
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ath9k_hw_cal_data *caldata = ah->caldata;
+ bool txiqcal_done = false;
+ bool status = true;
+ bool run_agc_cal = false, sep_iq_cal = false;
+ int i = 0;
+
+ /* Use chip chainmask only for calibration */
+ ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask);
+
+ if (ah->enabled_cals & TX_CL_CAL) {
+ REG_SET_BIT(ah, AR_PHY_CL_CAL_CTL, AR_PHY_CL_CAL_ENABLE);
+ run_agc_cal = true;
+ }
+
+ if (IS_CHAN_HALF_RATE(chan) || IS_CHAN_QUARTER_RATE(chan))
+ goto skip_tx_iqcal;
+
+ /* Do Tx IQ Calibration */
+ REG_RMW_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_1,
+ AR_PHY_TX_IQCAL_CONTROL_1_IQCORR_I_Q_COFF_DELPT,
+ DELPT);
+
+ /*
+ * For AR9485 or later chips, TxIQ cal runs as part of
+ * AGC calibration. Specifically, AR9550 in SoC chips.
+ */
+ if (ah->enabled_cals & TX_IQ_ON_AGC_CAL) {
+ if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0,
+ AR_PHY_TX_IQCAL_CONTROL_0_ENABLE_TXIQ_CAL)) {
+ txiqcal_done = true;
+ } else {
+ txiqcal_done = false;
+ }
+ run_agc_cal = true;
+ } else {
+ sep_iq_cal = true;
+ run_agc_cal = true;
+ }
+
+ /*
+ * In the SoC family, this will run for AR9300, AR9331 and AR9340.
+ */
+ if (sep_iq_cal) {
+ txiqcal_done = ar9003_hw_tx_iq_cal_run(ah);
+ REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_DIS);
+ udelay(5);
+ REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
+ }
+
+ if (AR_SREV_9550(ah) && IS_CHAN_2GHZ(chan)) {
+ if (!ar9003_hw_dynamic_osdac_selection(ah, txiqcal_done))
+ return false;
+ }
+
+skip_tx_iqcal:
+ if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
+ if (AR_SREV_9330_11(ah))
+ ar9003_hw_manual_peak_cal(ah, 0, IS_CHAN_2GHZ(chan));
+
+ /*
+ * For non-AR9550 chips, we just trigger AGC calibration
+ * in the HW, poll for completion and then process
+ * the results.
+ *
+ * For AR955x, we run it multiple times and use
+ * median IQ correction.
+ */
+ if (!AR_SREV_9550(ah)) {
+ status = do_ar9003_agc_cal(ah);
+ if (!status)
+ return false;
+
+ if (txiqcal_done)
+ ar9003_hw_tx_iq_cal_post_proc(ah, 0, false);
+ } else {
+ if (!txiqcal_done) {
+ status = do_ar9003_agc_cal(ah);
+ if (!status)
+ return false;
+ } else {
+ for (i = 0; i < MAXIQCAL; i++) {
+ status = do_ar9003_agc_cal(ah);
+ if (!status)
+ return false;
+ ar9003_hw_tx_iq_cal_post_proc(ah, i, false);
+ }
+ }
+ }
+ }
+
+ /* Revert chainmask to runtime parameters */
+ ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask);
+
+ /* Initialize list pointers */
+ ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL;
+
+ INIT_CAL(&ah->iq_caldata);
+ INSERT_CAL(ah, &ah->iq_caldata);
+ ath_dbg(common, CALIBRATE, "enabling IQ Calibration\n");
+
+ /* Initialize current pointer to first element in list */
+ ah->cal_list_curr = ah->cal_list;
+
+ if (ah->cal_list_curr)
+ ath9k_hw_reset_calibration(ah, ah->cal_list_curr);
+
+ if (caldata)
+ caldata->CalValid = 0;
+
+ return true;
+}
+
void ar9003_hw_attach_calib_ops(struct ath_hw *ah)
{
struct ath_hw_private_ops *priv_ops = ath9k_hw_private_ops(ah);
struct ath_hw_ops *ops = ath9k_hw_ops(ah);
+ if (AR_SREV_9485(ah) || AR_SREV_9462(ah) || AR_SREV_9565(ah))
+ priv_ops->init_cal = ar9003_hw_init_cal_pcoem;
+ else
+ priv_ops->init_cal = ar9003_hw_init_cal_soc;
+
priv_ops->init_cal_settings = ar9003_hw_init_cal_settings;
- priv_ops->init_cal = ar9003_hw_init_cal;
priv_ops->setup_calibration = ar9003_hw_setup_calibration;
ops->calibrate = ar9003_hw_calibrate;