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authorVasanthakumar Thiagarajan <vasanth@atheros.com>2011-04-19 19:29:15 +0530
committerJohn W. Linville <linville@tuxdriver.com>2011-04-25 14:50:12 -0400
commit2976bc5ebfb6c6dd37b4513540e567de0a2313f7 (patch)
tree8d6eccfdccb245ac33185277790fec26baa04914 /drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
parent2be7bfe0b454bc7c60ede777907ec817baa6196e (diff)
ath9k_hw: Configure chain switch table and attenuation control only for active chains
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/ar9003_eeprom.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_eeprom.c44
1 files changed, 26 insertions, 18 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index 262fb62c9a8..fd9b8c400f7 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -3501,23 +3501,28 @@ static u16 ar9003_hw_ant_ctrl_chain_get(struct ath_hw *ah,
static void ar9003_hw_ant_ctrl_apply(struct ath_hw *ah, bool is2ghz)
{
+ int chain;
+ static const u32 switch_chain_reg[AR9300_MAX_CHAINS] = {
+ AR_PHY_SWITCH_CHAIN_0,
+ AR_PHY_SWITCH_CHAIN_1,
+ AR_PHY_SWITCH_CHAIN_2,
+ };
+
u32 value = ar9003_hw_ant_ctrl_common_get(ah, is2ghz);
+
REG_RMW_FIELD(ah, AR_PHY_SWITCH_COM, AR_SWITCH_TABLE_COM_ALL, value);
value = ar9003_hw_ant_ctrl_common_2_get(ah, is2ghz);
REG_RMW_FIELD(ah, AR_PHY_SWITCH_COM_2, AR_SWITCH_TABLE_COM2_ALL, value);
- value = ar9003_hw_ant_ctrl_chain_get(ah, 0, is2ghz);
- REG_RMW_FIELD(ah, AR_PHY_SWITCH_CHAIN_0, AR_SWITCH_TABLE_ALL, value);
-
- if (!AR_SREV_9485(ah)) {
- value = ar9003_hw_ant_ctrl_chain_get(ah, 1, is2ghz);
- REG_RMW_FIELD(ah, AR_PHY_SWITCH_CHAIN_1, AR_SWITCH_TABLE_ALL,
- value);
-
- value = ar9003_hw_ant_ctrl_chain_get(ah, 2, is2ghz);
- REG_RMW_FIELD(ah, AR_PHY_SWITCH_CHAIN_2, AR_SWITCH_TABLE_ALL,
- value);
+ for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
+ if ((ah->rxchainmask & BIT(chain)) ||
+ (ah->txchainmask & BIT(chain))) {
+ value = ar9003_hw_ant_ctrl_chain_get(ah, chain,
+ is2ghz);
+ REG_RMW_FIELD(ah, switch_chain_reg[chain],
+ AR_SWITCH_TABLE_ALL, value);
+ }
}
if (AR_SREV_9485(ah)) {
@@ -3638,13 +3643,16 @@ static void ar9003_hw_atten_apply(struct ath_hw *ah, struct ath9k_channel *chan)
/* Test value. if 0 then attenuation is unused. Don't load anything. */
for (i = 0; i < 3; i++) {
- value = ar9003_hw_atten_chain_get(ah, i, chan);
- REG_RMW_FIELD(ah, ext_atten_reg[i],
- AR_PHY_EXT_ATTEN_CTL_XATTEN1_DB, value);
-
- value = ar9003_hw_atten_chain_get_margin(ah, i, chan);
- REG_RMW_FIELD(ah, ext_atten_reg[i],
- AR_PHY_EXT_ATTEN_CTL_XATTEN1_MARGIN, value);
+ if (ah->txchainmask & BIT(i)) {
+ value = ar9003_hw_atten_chain_get(ah, i, chan);
+ REG_RMW_FIELD(ah, ext_atten_reg[i],
+ AR_PHY_EXT_ATTEN_CTL_XATTEN1_DB, value);
+
+ value = ar9003_hw_atten_chain_get_margin(ah, i, chan);
+ REG_RMW_FIELD(ah, ext_atten_reg[i],
+ AR_PHY_EXT_ATTEN_CTL_XATTEN1_MARGIN,
+ value);
+ }
}
}