From 56338af52cf170610aeec3fa048907913294216c Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Wed, 29 Sep 2010 15:16:13 +0000
Subject: ath9k: fetch survey data for all channels

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23154 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../mac80211/patches/511-ath9k_per_chan_nf.patch   | 97 ++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 package/mac80211/patches/511-ath9k_per_chan_nf.patch

(limited to 'package/mac80211/patches/511-ath9k_per_chan_nf.patch')

diff --git a/package/mac80211/patches/511-ath9k_per_chan_nf.patch b/package/mac80211/patches/511-ath9k_per_chan_nf.patch
new file mode 100644
index 0000000000..cbf44e6408
--- /dev/null
+++ b/package/mac80211/patches/511-ath9k_per_chan_nf.patch
@@ -0,0 +1,97 @@
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -342,7 +342,6 @@ struct ath9k_hw_cal_data {
+ 	int32_t CalValid;
+ 	int8_t iCoff;
+ 	int8_t qCoff;
+-	int16_t rawNoiseFloor;
+ 	bool paprd_done;
+ 	bool nfcal_pending;
+ 	bool nfcal_interference;
+@@ -356,6 +355,7 @@ struct ath9k_channel {
+ 	u16 channel;
+ 	u32 channelFlags;
+ 	u32 chanmode;
++	s16 noisefloor;
+ };
+ 
+ #define IS_CHAN_G(_c) ((((_c)->channelFlags & (CHANNEL_G)) == CHANNEL_G) || \
+--- a/drivers/net/wireless/ath/ath9k/calib.c
++++ b/drivers/net/wireless/ath/ath9k/calib.c
+@@ -346,34 +346,34 @@ bool ath9k_hw_getnf(struct ath_hw *ah, s
+ 	struct ieee80211_channel *c = chan->chan;
+ 	struct ath9k_hw_cal_data *caldata = ah->caldata;
+ 
+-	if (!caldata)
+-		return false;
+-
+ 	chan->channelFlags &= (~CHANNEL_CW_INT);
+ 	if (REG_READ(ah, AR_PHY_AGC_CONTROL) & AR_PHY_AGC_CONTROL_NF) {
+ 		ath_print(common, ATH_DBG_CALIBRATE,
+ 			  "NF did not complete in calibration window\n");
+-		nf = 0;
+-		caldata->rawNoiseFloor = nf;
+ 		return false;
+-	} else {
+-		ath9k_hw_do_getnf(ah, nfarray);
+-		ath9k_hw_nf_sanitize(ah, nfarray);
+-		nf = nfarray[0];
+-		if (ath9k_hw_get_nf_thresh(ah, c->band, &nfThresh)
+-		    && nf > nfThresh) {
+-			ath_print(common, ATH_DBG_CALIBRATE,
+-				  "noise floor failed detected; "
+-				  "detected %d, threshold %d\n",
+-				  nf, nfThresh);
+-			chan->channelFlags |= CHANNEL_CW_INT;
+-		}
++	}
++
++	ath9k_hw_do_getnf(ah, nfarray);
++	ath9k_hw_nf_sanitize(ah, nfarray);
++	nf = nfarray[0];
++	if (ath9k_hw_get_nf_thresh(ah, c->band, &nfThresh)
++	    && nf > nfThresh) {
++		ath_print(common, ATH_DBG_CALIBRATE,
++			  "noise floor failed detected; "
++			  "detected %d, threshold %d\n",
++			  nf, nfThresh);
++		chan->channelFlags |= CHANNEL_CW_INT;
++	}
++
++	if (!caldata) {
++		chan->noisefloor = nf;
++		return false;
+ 	}
+ 
+ 	h = caldata->nfCalHist;
+ 	caldata->nfcal_pending = false;
+ 	ath9k_hw_update_nfcal_hist_buffer(ah, caldata, nfarray);
+-	caldata->rawNoiseFloor = h[0].privNF;
++	chan->noisefloor = h[0].privNF;
+ 	return true;
+ }
+ 
+@@ -401,10 +401,10 @@ void ath9k_init_nfcal_hist_buffer(struct
+ 
+ s16 ath9k_hw_getchan_noise(struct ath_hw *ah, struct ath9k_channel *chan)
+ {
+-	if (!ah->caldata || !ah->caldata->rawNoiseFloor)
++	if (!ah->curchan || !ah->curchan->noisefloor)
+ 		return ath9k_hw_get_default_nf(ah, chan);
+ 
+-	return ah->caldata->rawNoiseFloor;
++	return ah->curchan->noisefloor;
+ }
+ EXPORT_SYMBOL(ath9k_hw_getchan_noise);
+ 
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1251,7 +1251,7 @@ int ath9k_hw_reset(struct ath_hw *ah, st
+ 	if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
+ 		return -EIO;
+ 
+-	if (curchan && !ah->chip_fullsleep && ah->caldata)
++	if (curchan && !ah->chip_fullsleep)
+ 		ath9k_hw_getnf(ah, curchan);
+ 
+ 	ah->caldata = caldata;
-- 
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