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ath9k: add noise floor calibration fix that should improve stability, backport of r26819

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git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@26820 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd 2011-05-04 14:36:15 +00:00
parent 6389f5b552
commit 0f727a9345
1 changed files with 52 additions and 0 deletions
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52
package/mac80211/patches/300-pending_work.patch
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@ -565,3 +565,55 @@
HT_RX_REORDER_BUF_TIMEOUT);
} else {
del_timer(&tid_agg_rx->reorder_timer);
--- a/drivers/net/wireless/ath/ath9k/calib.c
+++ b/drivers/net/wireless/ath/ath9k/calib.c
@@ -69,15 +69,21 @@ static void ath9k_hw_update_nfcal_hist_b
int16_t *nfarray)
{
struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_conf *conf = &common->hw->conf;
struct ath_nf_limits *limit;
struct ath9k_nfcal_hist *h;
bool high_nf_mid = false;
+ u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
int i;
h = cal->nfCalHist;
limit = ath9k_hw_get_nf_limits(ah, ah->curchan);
for (i = 0; i < NUM_NF_READINGS; i++) {
+ if (!(chainmask & (1 << i)) ||
+ ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
+ continue;
+
h[i].nfCalBuffer[h[i].currIndex] = nfarray[i];
if (++h[i].currIndex >= ATH9K_NF_CAL_HIST_MAX)
@@ -225,6 +231,7 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
int32_t val;
u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_conf *conf = &common->hw->conf;
s16 default_nf = ath9k_hw_get_default_nf(ah, chan);
if (ah->caldata)
@@ -234,6 +241,9 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
if (chainmask & (1 << i)) {
s16 nfval;
+ if ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf))
+ continue;
+
if (h)
nfval = h[i].privNF;
else
@@ -293,6 +303,9 @@ void ath9k_hw_loadnf(struct ath_hw *ah,
ENABLE_REGWRITE_BUFFER(ah);
for (i = 0; i < NUM_NF_READINGS; i++) {
if (chainmask & (1 << i)) {
+ if ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf))
+ continue;
+
val = REG_READ(ah, ah->nf_regs[i]);
val &= 0xFFFFFE00;
val |= (((u32) (-50) << 1) & 0x1ff);