From: Bruno Randolf <br1@einfach.org>
To: linville@tuxdriver.com
Cc: ath5k-devel@lists.ath5k.org, linux-wireless@vger.kernel.org
Subject: [PATCH 12/13] ath5k: IQ calibration for AR5211 is slightly different
Date: Tue, 09 Mar 2010 16:56:15 +0900 [thread overview]
Message-ID: <20100309075615.30616.36296.stgit@void> (raw)
In-Reply-To: <20100309075124.30616.40896.stgit@void>
according to the HAL sources the calculation of the Q value is slightly
different for AR5211 chips.
i couldn't test this since IQ calibration never finishes on older parts. this
is a different problem...
Signed-off-by: Bruno Randolf <br1@einfach.org>
---
drivers/net/wireless/ath/ath5k/phy.c | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index 95cebd6..3a18742 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -1399,7 +1399,11 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
}
i_coffd = ((i_pwr >> 1) + (q_pwr >> 1)) >> 7;
- q_coffd = q_pwr >> 7;
+
+ if (ah->ah_version == AR5K_AR5211)
+ q_coffd = q_pwr >> 6;
+ else
+ q_coffd = q_pwr >> 7;
/* protect against divide by 0 and loss of sign bits */
if (i_coffd == 0 || q_coffd < 2)
@@ -1408,7 +1412,10 @@ static int ath5k_hw_rf511x_calibrate(struct ath5k_hw *ah,
i_coff = (-iq_corr) / i_coffd;
i_coff = clamp(i_coff, -32, 31); /* signed 6 bit */
- q_coff = (i_pwr / q_coffd) - 128;
+ if (ah->ah_version == AR5K_AR5211)
+ q_coff = (i_pwr / q_coffd) - 64;
+ else
+ q_coff = (i_pwr / q_coffd) - 128;
q_coff = clamp(q_coff, -16, 15); /* signed 5 bit */
ATH5K_DBG_UNLIMIT(ah->ah_sc, ATH5K_DEBUG_CALIBRATE,
next prev parent reply other threads:[~2010-03-09 7:56 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-09 7:55 [PATCH 00/13] all my ath5k patches Bruno Randolf
2010-03-09 7:55 ` [PATCH 01/13] ath5k: add antenna statistics and debugfs file for antenna settings Bruno Randolf
2010-03-09 12:15 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 02/13] ath5k: use fixed antenna for tx descriptors Bruno Randolf
2010-03-09 12:16 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 03/13] ath5k: preserve antenna settings Bruno Randolf
2010-03-09 12:16 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 04/13] ath5k: fix TSF reset Bruno Randolf
2010-03-09 12:17 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 05/13] ath5k: remove double opmode definition Bruno Randolf
2010-03-09 12:17 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 06/13] ath5k: remove ah_magic Bruno Randolf
2010-03-09 12:18 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 07/13] ath5k: remove ah_mac_revision Bruno Randolf
2010-03-09 12:18 ` Nick Kossifidis
2010-03-09 7:55 ` [PATCH 08/13] ath5k: remove ah_gpio_npins Bruno Randolf
2010-03-09 12:19 ` Nick Kossifidis
2010-03-09 7:56 ` [PATCH 09/13] ath5k: add debugfs file frameerrors Bruno Randolf
2010-03-09 12:21 ` Nick Kossifidis
2010-03-09 7:56 ` [PATCH 10/13] ath5k: fix I/Q calibration (for real) Bruno Randolf
2010-03-09 12:22 ` Nick Kossifidis
2010-03-09 7:56 ` [PATCH 11/13] ath5k: read eeprom IQ calibration values correctly for G mode Bruno Randolf
2010-03-09 12:22 ` Nick Kossifidis
2010-03-09 7:56 ` Bruno Randolf [this message]
2010-03-09 12:23 ` [PATCH 12/13] ath5k: IQ calibration for AR5211 is slightly different Nick Kossifidis
2010-03-09 7:56 ` [PATCH 13/13] ath5k: Minor EEPROM documentation updates Bruno Randolf
2010-03-09 14:33 ` [PATCH 00/13] all my ath5k patches John W. Linville
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