From: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ar9003_phy.c | 50 ++++++++++++++++++++++++++-
1 files changed, 49 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
index 9767265..3e3472e 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c
@@ -106,7 +106,55 @@ static int ar9003_hw_set_channel(struct ath_hw *ah, struct ath9k_channel *chan)
static void ar9003_hw_spur_mitigate(struct ath_hw *ah,
struct ath9k_channel *chan)
{
- /* TODO */
+ u32 spur_freq[4] = { 2420, 2440, 2464, 2480 };
+ int cur_bb_spur, negative = 0, cck_spur_freq;
+ int i;
+
+ /*
+ * Need to verify range +/- 10 MHz in control channel, otherwise spur
+ * is out-of-band and can be ignored.
+ */
+
+ for (i = 0; i < 4; i++) {
+ negative = 0;
+ cur_bb_spur = spur_freq[i] - chan->channel;
+
+ if (cur_bb_spur < 0) {
+ negative = 1;
+ cur_bb_spur = -cur_bb_spur;
+ }
+ if (cur_bb_spur < 10) {
+ cck_spur_freq = (int)((cur_bb_spur << 19) / 11);
+
+ if (negative == 1)
+ cck_spur_freq = -cck_spur_freq;
+
+ cck_spur_freq = cck_spur_freq & 0xfffff;
+
+ REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_YCOK_MAX, 0x7);
+ REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
+ AR_PHY_CCK_SPUR_MIT_SPUR_RSSI_THR, 0x7f);
+ REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
+ AR_PHY_CCK_SPUR_MIT_SPUR_FILTER_TYPE,
+ 0x2);
+ REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
+ AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT,
+ 0x1);
+ REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
+ AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ,
+ cck_spur_freq);
+
+ return;
+ }
+ }
+
+ REG_RMW_FIELD(ah, AR_PHY_AGC_CONTROL,
+ AR_PHY_AGC_CONTROL_YCOK_MAX, 0x5);
+ REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
+ AR_PHY_CCK_SPUR_MIT_USE_CCK_SPUR_MIT, 0x0);
+ REG_RMW_FIELD(ah, AR_PHY_CCK_SPUR_MIT,
+ AR_PHY_CCK_SPUR_MIT_CCK_SPUR_FREQ, 0x0);
}
static u32 ar9003_hw_compute_pll_control(struct ath_hw *ah,
--
1.6.3.3
--
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