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ath5k: Implement antenna control

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* Add code to support the various antenna scenarios supported by hw

 * For now hardcode the default scenario (single or dual omnis with
 tx/rx diversity working and tx antenna handled by session -hw keeps
 track on which antenna it got ack from each ap/station and maps each
 ap/station to one of the antennas-).

 Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>
 Signed-off-by: Bob Copeland <me@bobcopeland.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis
2009-04-30 15:55:49 -04:00
committed by John W. Linville
parent 6f5f39c95a
commit 2bed03ebf6
8 changed files with 271 additions and 51 deletions
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28
drivers/net/wireless/ath/ath5k/reset.c
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@@ -698,13 +698,13 @@ static void ath5k_hw_commit_eeprom_settings(struct ath5k_hw *ah,
/* Set antenna idle switch table */
AR5K_REG_WRITE_BITS(ah, AR5K_PHY_ANT_CTL,
AR5K_PHY_ANT_CTL_SWTABLE_IDLE,
(ah->ah_antenna[ee_mode][0] |
(ah->ah_ant_ctl[ee_mode][0] |
AR5K_PHY_ANT_CTL_TXRX_EN));
/* Set antenna switch table */
ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[0]],
/* Set antenna switch tables */
ath5k_hw_reg_write(ah, ah->ah_ant_ctl[ee_mode][ant[0]],
AR5K_PHY_ANT_SWITCH_TABLE_0);
ath5k_hw_reg_write(ah, ah->ah_antenna[ee_mode][ant[1]],
ath5k_hw_reg_write(ah, ah->ah_ant_ctl[ee_mode][ant[1]],
AR5K_PHY_ANT_SWITCH_TABLE_1);
/* Noise floor threshold */
@@ -1042,17 +1042,15 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
/*
* In case a fixed antenna was set as default
* write the same settings on both AR5K_PHY_ANT_SWITCH_TABLE
* registers.
* use the same switch table twice.
*/
if (s_ant != 0) {
if (s_ant == AR5K_ANT_FIXED_A) /* 1 - Main */
ant[0] = ant[1] = AR5K_ANT_FIXED_A;
else /* 2 - Aux */
ant[0] = ant[1] = AR5K_ANT_FIXED_B;
} else {
ant[0] = AR5K_ANT_FIXED_A;
ant[1] = AR5K_ANT_FIXED_B;
if (ah->ah_ant_mode == AR5K_ANTMODE_FIXED_A)
ant[0] = ant[1] = AR5K_ANT_SWTABLE_A;
else if (ah->ah_ant_mode == AR5K_ANTMODE_FIXED_B)
ant[0] = ant[1] = AR5K_ANT_SWTABLE_B;
else {
ant[0] = AR5K_ANT_SWTABLE_A;
ant[1] = AR5K_ANT_SWTABLE_B;
}
/* Commit values from EEPROM */
@@ -1260,6 +1258,8 @@ int ath5k_hw_reset(struct ath5k_hw *ah, enum nl80211_iftype op_mode,
*/
ath5k_hw_noise_floor_calibration(ah, channel->center_freq);
/* Restore antenna mode */
ath5k_hw_set_antenna_mode(ah, ah->ah_ant_mode);
/*
* Configure QCUs/DCUs