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authorSujith Manoharan <c_manoha@qca.qualcomm.com>2013-12-18 09:53:23 +0530
committerJohn W. Linville <linville@tuxdriver.com>2013-12-18 15:23:46 -0500
commit3533bf6b15a0885344367aa2a4b3e2c8e496520f (patch)
tree57db6d61bdf5ea88ed32d67ffe331db535a09d7b
parentee65b38890fd98ba927aa2a69c5cc2b2cc1c9c38 (diff)
downloadlinux-3533bf6b15a0885344367aa2a4b3e2c8e496520f.tar.bz2
ath9k: Fix regulatory compliance
To comply with ETSI regulations, make sure that the CCA registers are programmed with the threshold values from the EEPROM/Caldata. A new field is used to indicate if the card has been calibrated with the required threshold information. Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_eeprom.c32
-rw-r--r--drivers/net/wireless/ath/ath9k/ar9003_phy.h4
2 files changed, 35 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
index d9e09bf178aa..c8d22eccfef8 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_eeprom.c
@@ -4121,6 +4121,37 @@ static void ar9003_hw_thermo_cal_apply(struct ath_hw *ah)
}
}
+static void ar9003_hw_apply_minccapwr_thresh(struct ath_hw *ah,
+ bool is2ghz)
+{
+ struct ar9300_eeprom *eep = &ah->eeprom.ar9300_eep;
+ const u_int32_t cca_ctrl[AR9300_MAX_CHAINS] = {
+ AR_PHY_CCA_CTRL_0,
+ AR_PHY_CCA_CTRL_1,
+ AR_PHY_CCA_CTRL_2,
+ };
+ int chain;
+ u32 val;
+
+ if (is2ghz) {
+ if (!(eep->base_ext1.misc_enable & BIT(2)))
+ return;
+ } else {
+ if (!(eep->base_ext1.misc_enable & BIT(3)))
+ return;
+ }
+
+ for (chain = 0; chain < AR9300_MAX_CHAINS; chain++) {
+ if (!(ah->caps.tx_chainmask & BIT(chain)))
+ continue;
+
+ val = ar9003_modal_header(ah, is2ghz)->noiseFloorThreshCh[chain];
+ REG_RMW_FIELD(ah, cca_ctrl[chain],
+ AR_PHY_EXT_CCA0_THRESH62_1, val);
+ }
+
+}
+
static void ath9k_hw_ar9300_set_board_values(struct ath_hw *ah,
struct ath9k_channel *chan)
{
@@ -4135,6 +4166,7 @@ static void ath9k_hw_ar9300_set_board_values(struct ath_hw *ah,
if (!AR_SREV_9330(ah) && !AR_SREV_9340(ah))
ar9003_hw_internal_regulator_apply(ah);
ar9003_hw_apply_tuning_caps(ah);
+ ar9003_hw_apply_minccapwr_thresh(ah, chan);
ar9003_hw_txend_to_xpa_off_apply(ah, is2ghz);
ar9003_hw_thermometer_apply(ah);
ar9003_hw_thermo_cal_apply(ah);
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.h b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
index bbbfc4dc59eb..1b441715ba39 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.h
@@ -270,7 +270,7 @@
#define AR_PHY_AGC (AR_AGC_BASE + 0x14)
#define AR_PHY_EXT_ATTEN_CTL_0 (AR_AGC_BASE + 0x18)
#define AR_PHY_CCA_0 (AR_AGC_BASE + 0x1c)
-#define AR_PHY_EXT_CCA0 (AR_AGC_BASE + 0x20)
+#define AR_PHY_CCA_CTRL_0 (AR_AGC_BASE + 0x20)
#define AR_PHY_RESTART (AR_AGC_BASE + 0x24)
/*
@@ -398,6 +398,8 @@
#define AR9280_PHY_CCA_THRESH62_S 12
#define AR_PHY_EXT_CCA0_THRESH62 0x000000FF
#define AR_PHY_EXT_CCA0_THRESH62_S 0
+#define AR_PHY_EXT_CCA0_THRESH62_1 0x000001FF
+#define AR_PHY_EXT_CCA0_THRESH62_1_S 0
#define AR_PHY_CCK_DETECT_WEAK_SIG_THR_CCK 0x0000003F
#define AR_PHY_CCK_DETECT_WEAK_SIG_THR_CCK_S 0
#define AR_PHY_CCK_DETECT_ANT_SWITCH_TIME 0x00001FC0