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