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-rw-r--r--package/kernel/mac80211/patches/326-ath9k-make-NF-load-complete-quickly-and-reliably.patch87
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 71f7a40..0000000
--- 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));