From: Sujith Manoharan <sujith@msujith.org>
To: John Linville <linville@tuxdriver.com>
Cc: linux-wireless@vger.kernel.org
Subject: [PATCH 1/3] ath9k: Fix calibration for AR9462
Date: Wed, 11 Sep 2013 11:40:57 +0530 [thread overview]
Message-ID: <1378879859-32290-1-git-send-email-sujith@msujith.org> (raw)
From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
TX IQ calibration is disabled by default for AR9462, this
is done using the initvals (reg 0xa644).
But, to compensate for this, the AR_PHY_RX_DELAY register
should be set to the max allowed value when performing
calibration.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
---
drivers/net/wireless/ath/ath9k/ar9003_calib.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
index 6988e1d..6001bc0 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c
@@ -1019,6 +1019,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah,
bool is_reusable = true, status = true;
bool run_rtt_cal = false, run_agc_cal, sep_iq_cal = false;
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;
@@ -1099,6 +1100,15 @@ skip_tx_iqcal:
REG_WRITE(ah, AR_PHY_ACTIVE, AR_PHY_ACTIVE_EN);
}
+ 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);
+ }
+
if (run_agc_cal || !(ah->ah_flags & AH_FASTCC)) {
/* Calibrate the AGC */
REG_WRITE(ah, AR_PHY_AGC_CONTROL,
@@ -1113,6 +1123,11 @@ skip_tx_iqcal:
ar9003_hw_do_manual_peak_cal(ah, chan);
}
+ 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)
ar9003_mci_init_cal_done(ah);
--
1.8.4
next reply other threads:[~2013-09-11 6:14 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-11 6:10 Sujith Manoharan [this message]
2013-09-11 6:10 ` [PATCH 2/3] ath9k: Fix issue with parsing malformed CFP IE Sujith Manoharan
2013-09-12 1:19 ` Kalle Valo
2013-09-12 2:20 ` Sujith Manoharan
2013-09-11 6:10 ` [PATCH 3/3] ath9k: Handle abnormal NAV in AP mode Sujith Manoharan
2013-09-11 16:00 ` [PATCH 3/3 v2] " Sujith Manoharan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1378879859-32290-1-git-send-email-sujith@msujith.org \
--to=sujith@msujith.org \
--cc=linux-wireless@vger.kernel.org \
--cc=linville@tuxdriver.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox