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ath9k: merge fix for noise floor calibration
Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 48641
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@ -0,0 +1,87 @@
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From: Miaoqing Pan <miaoqing@codeaurora.org>
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Date: Fri, 5 Feb 2016 09:45:50 +0800
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Subject: [PATCH] ath9k: make NF load complete quickly and reliably
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Make NF load complete quickly and reliably. NF load execution
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is delayed by HW to end of frame if frame Rx or Tx is ongoing.
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Increasing timeout to max frame duration. If NF cal is ongoing
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before NF load, stop it before load, and restart it afterwards.
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Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org>
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---
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--- a/drivers/net/wireless/ath/ath9k/calib.c
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+++ b/drivers/net/wireless/ath/ath9k/calib.c
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@@ -241,6 +241,7 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s
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u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
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struct ath_common *common = ath9k_hw_common(ah);
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s16 default_nf = ath9k_hw_get_default_nf(ah, chan);
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+ u32 bb_agc_ctl = REG_READ(ah, AR_PHY_AGC_CONTROL);
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if (ah->caldata)
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h = ah->caldata->nfCalHist;
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@@ -264,6 +265,16 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s
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}
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/*
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+ * stop NF cal if ongoing to ensure NF load completes immediately
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+ * (or after end rx/tx frame if ongoing)
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+ */
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+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_NF) {
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+ REG_CLR_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
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+ REG_RMW_BUFFER_FLUSH(ah);
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+ ENABLE_REG_RMW_BUFFER(ah);
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+ }
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+
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+ /*
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* Load software filtered NF value into baseband internal minCCApwr
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* variable.
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*/
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@@ -276,18 +287,33 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s
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/*
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* Wait for load to complete, should be fast, a few 10s of us.
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- * The max delay was changed from an original 250us to 10000us
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- * since 250us often results in NF load timeout and causes deaf
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- * condition during stress testing 12/12/2009
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+ * The max delay was changed from an original 250us to 22.2 msec.
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+ * This would increase timeout to the longest possible frame
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+ * (11n max length 22.1 msec)
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*/
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- for (j = 0; j < 10000; j++) {
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+ for (j = 0; j < 22200; j++) {
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if ((REG_READ(ah, AR_PHY_AGC_CONTROL) &
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- AR_PHY_AGC_CONTROL_NF) == 0)
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+ AR_PHY_AGC_CONTROL_NF) == 0)
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break;
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udelay(10);
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}
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/*
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+ * Restart NF so it can continue.
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+ */
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+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_NF) {
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+ ENABLE_REG_RMW_BUFFER(ah);
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+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_ENABLE_NF)
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+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
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+ AR_PHY_AGC_CONTROL_ENABLE_NF);
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+ if (bb_agc_ctl & AR_PHY_AGC_CONTROL_NO_UPDATE_NF)
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+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL,
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+ AR_PHY_AGC_CONTROL_NO_UPDATE_NF);
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+ REG_SET_BIT(ah, AR_PHY_AGC_CONTROL, AR_PHY_AGC_CONTROL_NF);
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+ REG_RMW_BUFFER_FLUSH(ah);
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+ }
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+
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+ /*
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* We timed out waiting for the noisefloor to load, probably due to an
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* in-progress rx. Simply return here and allow the load plenty of time
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* to complete before the next calibration interval. We need to avoid
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@@ -296,7 +322,7 @@ int ath9k_hw_loadnf(struct ath_hw *ah, s
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* here, the baseband nf cal will just be capped by our present
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* noisefloor until the next calibration timer.
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*/
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- if (j == 10000) {
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+ if (j == 22200) {
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ath_dbg(common, ANY,
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"Timeout while waiting for nf to load: AR_PHY_AGC_CONTROL=0x%x\n",
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REG_READ(ah, AR_PHY_AGC_CONTROL));
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@ -18,7 +18,7 @@
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const u8 *addr);
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--- a/include/net/mac80211.h
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+++ b/include/net/mac80211.h
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@@ -1282,6 +1282,7 @@ enum ieee80211_smps_mode {
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@@ -1286,6 +1286,7 @@ enum ieee80211_smps_mode {
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*
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* @power_level: requested transmit power (in dBm), backward compatibility
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* value only that is set to the minimum of all interfaces
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@ -26,7 +26,7 @@
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*
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* @chandef: the channel definition to tune to
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* @radar_enabled: whether radar detection is enabled
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@@ -1302,6 +1303,7 @@ enum ieee80211_smps_mode {
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@@ -1306,6 +1307,7 @@ enum ieee80211_smps_mode {
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struct ieee80211_conf {
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u32 flags;
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int power_level, dynamic_ps_timeout;
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@ -87,7 +87,7 @@
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CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
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--- a/net/mac80211/ieee80211_i.h
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+++ b/net/mac80211/ieee80211_i.h
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@@ -1317,6 +1317,7 @@ struct ieee80211_local {
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@@ -1318,6 +1318,7 @@ struct ieee80211_local {
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int dynamic_ps_forced_timeout;
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int user_power_level; /* in dBm, for all interfaces */
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@ -54,7 +54,8 @@
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+ (brightness != LED_OFF) ^ led->gpio->active_low);
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+ ath9k_ps_restore(sc);
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+}
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+
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- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
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+static int ath_add_led(struct ath_softc *sc, struct ath_led *led)
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+{
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+ const struct gpio_led *gpio = led->gpio;
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@ -63,8 +64,7 @@
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+ led->cdev.name = gpio->name;
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+ led->cdev.default_trigger = gpio->default_trigger;
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+ led->cdev.brightness_set = ath_led_brightness;
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- ath9k_hw_set_gpio(sc->sc_ah, sc->sc_ah->led_pin, val);
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+
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+ ret = led_classdev_register(wiphy_dev(sc->hw->wiphy), &led->cdev);
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+ if (ret < 0)
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+ return ret;
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