diff options
author | Sujith Manoharan <c_manoha@qca.qualcomm.com> | 2013-09-11 16:36:32 +0530 |
---|---|---|
committer | John W. Linville <linville@tuxdriver.com> | 2013-09-26 15:13:47 -0400 |
commit | 3001f0d00bcb77d818efa331864d69a9338550e6 (patch) | |
tree | d42c98057007282ba0331a828ec7cc74780a53da /drivers/net/wireless/ath/ath9k/ar9003_calib.c | |
parent | 4b9b42bfe08fa369c4f51f00d5f349b32242cd8c (diff) |
ath9k: Fix PeakDetect calibration for AR9462
Since HW PeakDetect calibration is turned on for AR9462,
various conditions have to be handled in the driver:
* Enable agc_cal when loading RTT fails.
* Disable SW PeakDetect calibration when RTT calibration is not enabled.
* Keep SW PeakDetect calibration result in driver.
* Update RTT table according to the saved value.
* Write RTT back after modifying SW RTT table.
* Enable local mode for PeakDetect calibration and restore values.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_calib.c')
-rw-r--r-- | drivers/net/wireless/ath/ath9k/ar9003_calib.c | 57 |
1 files changed, 46 insertions, 11 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index 687173c8d280..22934d3ca544 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -965,18 +965,44 @@ static void ar9003_hw_manual_peak_cal(struct ath_hw *ah, u8 chain, bool is_2g) } static void ar9003_hw_do_manual_peak_cal(struct ath_hw *ah, - struct ath9k_channel *chan) + 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) @@ -1047,13 +1073,18 @@ 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) { @@ -1124,7 +1155,7 @@ skip_tx_iqcal: AR_PHY_AGC_CONTROL_CAL, 0, AH_WAIT_TIMEOUT); - ar9003_hw_do_manual_peak_cal(ah, chan); + ar9003_hw_do_manual_peak_cal(ah, chan, run_rtt_cal); } if (REG_READ(ah, AR_PHY_CL_CAL_CTL) & AR_PHY_CL_CAL_ENABLE) { @@ -1159,12 +1190,16 @@ skip_tx_iqcal: 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); } |