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ath9k: Remove incorrect diversity initialization

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Fast antenna diversity is required only for single chain
chips and the diversity initialization is done in the
per-family board setup routines. Enabling of diversity
should be done based on the calibrated EEPROM/OTP data,
doing it for all chips is incorrect.

Remove the code that sets the fast_div bit for all cards, since
the documentation for the AR_PHY_CCK_DETECT register says:

reg 642: sig_detect_cck
enable_ant_fast_div : Only used for single chain chips.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2013-09-16 10:37:01 +05:30 committed by John W. Linville
parent c6cc47b101
commit 551ed40969
2 changed files with 0 additions and 6 deletions
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3
drivers/net/wireless/ath/ath9k/ar5008_phy.c
View File

@ -631,9 +631,6 @@ static void ar5008_hw_override_ini(struct ath_hw *ah,
REG_WRITE(ah, AR_PCU_MISC_MODE2, val);
}
REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
if (AR_SREV_9280_20_OR_LATER(ah))
return;
/*

3
drivers/net/wireless/ath/ath9k/ar9003_phy.c
View File

@ -632,9 +632,6 @@ static void ar9003_hw_override_ini(struct ath_hw *ah)
AR_PCU_MISC_MODE2_CFP_IGNORE;
REG_WRITE(ah, AR_PCU_MISC_MODE2, val);
REG_SET_BIT(ah, AR_PHY_CCK_DETECT,
AR_PHY_CCK_DETECT_BB_ENABLE_ANT_FAST_DIV);
if (AR_SREV_9462(ah) || AR_SREV_9565(ah)) {
REG_WRITE(ah, AR_GLB_SWREG_DISCONT_MODE,
AR_GLB_SWREG_DISCONT_EN_BT_WLAN);