diff options
Diffstat (limited to 'package/kernel/mac80211/patches/326-ath9k-make-NF-load-complete-quickly-and-reliably.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/326-ath9k-make-NF-load-complete-quickly-and-reliably.patch | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/package/kernel/mac80211/patches/326-ath9k-make-NF-load-complete-quickly-and-reliably.patch b/package/kernel/mac80211/patches/326-ath9k-make-NF-load-complete-quickly-and-reliably.patch deleted file mode 100644 index 71f7a40433..0000000000 --- a/package/kernel/mac80211/patches/326-ath9k-make-NF-load-complete-quickly-and-reliably.patch +++ /dev/null @@ -1,87 +0,0 @@ -From: Miaoqing Pan <miaoqing@codeaurora.org> -Date: Fri, 5 Feb 2016 09:45:50 +0800 -Subject: [PATCH] ath9k: make NF load complete quickly and reliably - -Make NF load complete quickly and reliably. NF load execution -is delayed by HW to end of frame if frame Rx or Tx is ongoing. -Increasing timeout to max frame duration. If NF cal is ongoing -before NF load, stop it before load, and restart it afterwards. - -Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> ---- - ---- a/drivers/net/wireless/ath/ath9k/calib.c -+++ b/drivers/net/wireless/ath/ath9k/calib.c -@@ -241,6 +241,7 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s - u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask; - struct ath_common *common = ath9k_hw_common(ah); - s16 default_nf = ath9k_hw_get_default_nf(ah, chan); -+ u32 bb_agc_ctl = REG_READ(ah, AR_PHY_AGC_CONTROL); - - if (ah->caldata) - h = ah->caldata->nfCalHist; -@@ -264,6 +265,16 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s - } - - /* -+ * stop NF cal if ongoing to ensure NF load completes immediately -+ * (or after end rx/tx frame if ongoing) -+ */ -+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_NF) { -+ REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); -+ REG_RMW_BUFFER_FLUSH(ah); -+ ENABLE_REG_RMW_BUFFER(ah); -+ } -+ -+ /* - * Load software filtered NF value into baseband internal minCCApwr - * variable. - */ -@@ -276,18 +287,33 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s - - /* - * Wait for load to complete, should be fast, a few 10s of us. -- * The max delay was changed from an original 250us to 10000us -- * since 250us often results in NF load timeout and causes deaf -- * condition during stress testing 12/12/2009 -+ * The max delay was changed from an original 250us to 22.2 msec. -+ * This would increase timeout to the longest possible frame -+ * (11n max length 22.1 msec) - */ -- for (j = 0; j < 10000; j++) { -+ for (j = 0; j < 22200; j++) { - if ((REG_READ(ah, AR_PHY_AGC_CONTROL) & -- AR_PHY_AGC_CONTROL_NF) == 0) -+ AR_PHY_AGC_CONTROL_NF) == 0) - break; - udelay(10); - } - - /* -+ * Restart NF so it can continue. -+ */ -+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_NF) { -+ ENABLE_REG_RMW_BUFFER(ah); -+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_ENABLE_NF) -+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, -+ AR_PHY_AGC_CONTROL_ENABLE_NF); -+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_NO_UPDATE_NF) -+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, -+ AR_PHY_AGC_CONTROL_NO_UPDATE_NF); -+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF); -+ REG_RMW_BUFFER_FLUSH(ah); -+ } -+ -+ /* - * We timed out waiting for the noisefloor to load, probably due to an - * in-progress rx. Simply return here and allow the load plenty of time - * to complete before the next calibration interval. We need to avoid -@@ -296,7 +322,7 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s - * here, the baseband nf cal will just be capped by our present - * noisefloor until the next calibration timer. - */ -- if (j == 10000) { -+ if (j == 22200) { - ath_dbg(common, ANY, - "Timeout while waiting for nf to load: AR_PHY_AGC_CONTROL=0x%x\n", - REG_READ(ah, AR_PHY_AGC_CONTROL)); |