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@@ -0,0 +1,86 @@
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+From: Felix Fietkau <[email protected]>
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+Date: Mon, 11 Jul 2016 10:34:37 +0200
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+Subject: [PATCH] ath9k_hw: fix spectral scan on AR9285 and newer
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+
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+The register layout of AR_PHY_SPECTRAL_SCAN has changed, only AR9280
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+uses the old layout
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+
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+Signed-off-by: Felix Fietkau <[email protected]>
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+---
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+
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+--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.c
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++++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.c
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+@@ -476,6 +476,7 @@ static void ar9002_hw_set_bt_ant_diversi
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+ static void ar9002_hw_spectral_scan_config(struct ath_hw *ah,
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+ struct ath_spec_scan *param)
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+ {
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++ u32 repeat_bit;
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+ u8 count;
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+
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+ if (!param->enabled) {
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+@@ -486,12 +487,15 @@ static void ar9002_hw_spectral_scan_conf
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+ REG_SET_BIT(ah, AR_PHY_RADAR_0, AR_PHY_RADAR_0_FFT_ENA);
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+ REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, AR_PHY_SPECTRAL_SCAN_ENABLE);
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+
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++ if (AR_SREV_9280(ah))
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++ repeat_bit = AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT;
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++ else
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++ repeat_bit = AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI;
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++
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+ if (param->short_repeat)
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+- REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
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+- AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
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++ REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN, repeat_bit);
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+ else
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+- REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN,
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+- AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT);
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++ REG_CLR_BIT(ah, AR_PHY_SPECTRAL_SCAN, repeat_bit);
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+
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+ /* on AR92xx, the highest bit of count will make the the chip send
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+ * spectral samples endlessly. Check if this really was intended,
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+@@ -499,15 +503,25 @@ static void ar9002_hw_spectral_scan_conf
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+ */
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+ count = param->count;
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+ if (param->endless) {
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+- if (AR_SREV_9271(ah))
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+- count = 0;
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+- else
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++ if (AR_SREV_9280(ah))
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+ count = 0x80;
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++ else
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++ count = 0;
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+ } else if (count & 0x80)
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+ count = 0x7f;
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++ else if (!count)
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++ count = 1;
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++
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++ if (AR_SREV_9280(ah)) {
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++ REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
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++ AR_PHY_SPECTRAL_SCAN_COUNT, count);
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++ } else {
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++ REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
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++ AR_PHY_SPECTRAL_SCAN_COUNT_KIWI, count);
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++ REG_SET_BIT(ah, AR_PHY_SPECTRAL_SCAN,
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++ AR_PHY_SPECTRAL_SCAN_PHYERR_MASK_SELECT);
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++ }
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+
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+- REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
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+- AR_PHY_SPECTRAL_SCAN_COUNT, count);
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+ REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
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+ AR_PHY_SPECTRAL_SCAN_PERIOD, param->period);
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+ REG_RMW_FIELD(ah, AR_PHY_SPECTRAL_SCAN,
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+--- a/drivers/net/wireless/ath/ath9k/ar9002_phy.h
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++++ b/drivers/net/wireless/ath/ath9k/ar9002_phy.h
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+@@ -177,8 +177,11 @@
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+ #define AR_PHY_SPECTRAL_SCAN_PERIOD_S 8
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+ #define AR_PHY_SPECTRAL_SCAN_COUNT 0x00FF0000 /* Number of reports, reg 68, bits 16-23*/
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+ #define AR_PHY_SPECTRAL_SCAN_COUNT_S 16
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++#define AR_PHY_SPECTRAL_SCAN_COUNT_KIWI 0x0FFF0000 /* Number of reports, reg 68, bits 16-27*/
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++#define AR_PHY_SPECTRAL_SCAN_COUNT_KIWI_S 16
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+ #define AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT 0x01000000 /* Short repeat, reg 68, bit 24*/
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+-#define AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_S 24 /* Short repeat, reg 68, bit 24*/
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++#define AR_PHY_SPECTRAL_SCAN_SHORT_REPEAT_KIWI 0x10000000 /* Short repeat, reg 68, bit 28*/
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++#define AR_PHY_SPECTRAL_SCAN_PHYERR_MASK_SELECT 0x40000000
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+
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+ #define AR_PHY_RX_DELAY 0x9914
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+ #define AR_PHY_SEARCH_START_DELAY 0x9918
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Felix Fietkau