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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>
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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This patch fixes multiple issues with the current RTT
implementation in ath9k.
* The data that is obtained from the RTT interface registers
are stored in 31:5 - mask out the extra bits when reading them.
* A history buffer is maintained which is not needed at all.
Remove this array and just store the baseband data for each
chain (or bank).
* A 'num_readings' variable was being used to handle the
last entry. But it was being used in an improper manner, with
the result that the RTT values were never being written
to the RTT Interface registers. Fix this by using a simple
flag.
* Stop baseband operations before programming the calibration values
to the HW.
* Do not restore RX gain settings as part of RTT.
Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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This fixes these sparse warnings:
CHECK drivers/net/wireless/ath/ath9k/ar9003_rtt.c
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:36:6: warning: symbol 'ar9003_hw_rtt_enable' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:41:6: warning: symbol 'ar9003_hw_rtt_disable' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:46:6: warning: symbol 'ar9003_hw_rtt_set_mask' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:52:6: warning: symbol 'ar9003_hw_rtt_force_restore' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:102:6: warning: symbol 'ar9003_hw_rtt_load_hist' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:135:6: warning: symbol 'ar9003_hw_rtt_fill_hist' was not declared. Should it be static?
drivers/net/wireless/ath/ath9k/ar9003_rtt.c:143:6: warning: symbol 'ar9003_hw_rtt_clear_hist' was not declared. Should it be stati
Signed-off-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Supported calibrations of radio retention table (RTT) are
- DC offset
- Filter
- Peak detect
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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