ath9k: reorganize patches, reset hardware after full sleep (fixes #10349)

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29155 3c298f89-4303-0410-b956-a3cf2f4a3e73

5 files changed, 98 insertions, 66 deletions

diff --git a/package/mac80211/patches/560-ath9k_reset_after_full_sleep.patch b/package/mac80211/patches/560-ath9k_reset_after_full_sleep.patch
new file mode 100644
index 000000000..9a5b58001
--- /dev/null
+++ b/package/mac80211/patches/560-ath9k_reset_after_full_sleep.patch
@@ -0,0 +1,68 @@
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -619,6 +619,7 @@ struct ath_softc {
+ 	u16 curtxpow;
+ 	bool ps_enabled;
+ 	bool ps_idle;
++	bool ps_fullsleep;
+ 	short nbcnvifs;
+ 	short nvifs;
+ 	unsigned long ps_usecount;
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -118,9 +118,10 @@ void ath9k_ps_restore(struct ath_softc *
+ 	if (--sc->ps_usecount != 0)
+ 		goto unlock;
+ 
+-	if (sc->ps_idle)
++	if (sc->ps_idle && (sc->ps_flags & PS_WAIT_FOR_TX_ACK)) {
+ 		mode = ATH9K_PM_FULL_SLEEP;
+-	else if (sc->ps_enabled &&
++		sc->ps_fullsleep = true;
++	} else if (sc->ps_enabled &&
+ 		 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
+ 			      PS_WAIT_FOR_CAB |
+ 			      PS_WAIT_FOR_PSPOLL_DATA |
+@@ -275,6 +276,7 @@ static bool ath_complete_reset(struct at
+ 			       sc->config.txpowlimit, &sc->curtxpow);
+ 	ath9k_hw_set_interrupts(ah);
+ 	ath9k_hw_enable_interrupts(ah);
++	sc->ps_fullsleep = false;
+ 
+ 	if (!(sc->sc_flags & (SC_OP_OFFCHANNEL)) && start) {
+ 		if (sc->sc_flags & SC_OP_BEACONS)
+@@ -332,7 +334,8 @@ static int ath_reset_internal(struct ath
+ 		hchan = ah->curchan;
+ 	}
+ 
+-	if (fastcc && !ath9k_hw_check_alive(ah))
++	if (fastcc && (sc->ps_fullsleep ||
++	    !ath9k_hw_check_alive(ah)))
+ 		fastcc = false;
+ 
+ 	if (!ath_prepare_reset(sc, retry_tx, flush))
+@@ -1173,6 +1176,13 @@ static void ath9k_tx(struct ieee80211_hw
+ 		}
+ 	}
+ 
++	/*
++	 * Cannot tx while the hardware is in full sleep, it first needs a full
++	 * chip reset to recover from that
++	 */
++	if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP))
++		goto exit;
++
+ 	if (unlikely(sc->sc_ah->power_mode != ATH9K_PM_AWAKE)) {
+ 		/*
+ 		 * We are using PS-Poll and mac80211 can request TX while in
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1983,7 +1983,7 @@ static void ath_tx_complete(struct ath_s
+ 		skb_pull(skb, padsize);
+ 	}
+ 
+-	if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) {
++	if ((sc->ps_flags & PS_WAIT_FOR_TX_ACK) && !txq->axq_depth) {
+ 		sc->ps_flags &= ~PS_WAIT_FOR_TX_ACK;
+ 		ath_dbg(common, ATH_DBG_PS,
+ 			"Going back to sleep after having received TX status (0x%lx)\n",
diff --git a/package/mac80211/patches/560-ath9k_fix_radio_stop.patch b/package/mac80211/patches/561-ath9k_fix_ps_idle_handling.patch
index 2367ffa6a..40f24e1ec 100644
--- a/package/mac80211/patches/560-ath9k_fix_radio_stop.patch
+++ b/package/mac80211/patches/561-ath9k_fix_ps_idle_handling.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -880,82 +880,6 @@ chip_reset:
+@@ -883,82 +883,6 @@ chip_reset:
  #undef SCHED_INTR
  }
  
@@ -83,7 +83,7 @@
  static int ath_reset(struct ath_softc *sc, bool retry_tx)
  {
  	int r;
-@@ -1091,6 +1015,9 @@ static int ath9k_start(struct ieee80211_
+@@ -1094,6 +1018,9 @@ static int ath9k_start(struct ieee80211_
  	 * and then setup of the interrupt mask.
  	 */
  	spin_lock_bh(&sc->sc_pcu_lock);
@@ -93,13 +93,15 @@
  	r = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
  	if (r) {
  		ath_err(common,
-@@ -1129,6 +1056,16 @@ static int ath9k_start(struct ieee80211_
+@@ -1132,6 +1059,18 @@ static int ath9k_start(struct ieee80211_
  		goto mutex_unlock;
  	}
  
-+	ath9k_hw_cfg_output(ah, ah->led_pin,
-+			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
-+	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
++	if (ah->led_pin >= 0) {
++		ath9k_hw_cfg_output(ah, ah->led_pin,
++				    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
++		ath9k_hw_set_gpio(ah, ah->led_pin, 0);
++	}
 +
 +	/*
 +	 * Reset key cache to sane defaults (all entries cleared) instead of
@@ -110,7 +112,15 @@
  	spin_unlock_bh(&sc->sc_pcu_lock);
  
  	if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
-@@ -1248,33 +1185,39 @@ static void ath9k_stop(struct ieee80211_
+@@ -1229,6 +1168,7 @@ static void ath9k_stop(struct ieee80211_
+ 	struct ath_softc *sc = hw->priv;
+ 	struct ath_hw *ah = sc->sc_ah;
+ 	struct ath_common *common = ath9k_hw_common(ah);
++	bool prev_idle;
+ 
+ 	mutex_lock(&sc->mutex);
+ 
+@@ -1258,35 +1198,45 @@ static void ath9k_stop(struct ieee80211_
  	 * before setting the invalid flag. */
  	ath9k_hw_disable_interrupts(ah);
  
@@ -128,12 +138,15 @@
 +	tasklet_kill(&sc->intr_tq);
 +	tasklet_kill(&sc->bcon_tasklet);
 +
++	prev_idle = sc->ps_idle;
 +	sc->ps_idle = true;
 +
 +	spin_lock_bh(&sc->sc_pcu_lock);
 +
-+	ath9k_hw_set_gpio(ah, ah->led_pin, 1);
-+	ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
++	if (ah->led_pin >= 0) {
++		ath9k_hw_set_gpio(ah, ah->led_pin, 1);
++		ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
++	}
 +
 +	ath_prepare_reset(sc, false, true);
  
@@ -166,8 +179,11 @@
 +	ath9k_ps_restore(sc);
  
  	sc->sc_flags |= SC_OP_INVALID;
++	sc->ps_idle = prev_idle;
+ 
+ 	mutex_unlock(&sc->mutex);
  
-@@ -1598,8 +1541,8 @@ static int ath9k_config(struct ieee80211
+@@ -1608,8 +1558,8 @@ static int ath9k_config(struct ieee80211
  	struct ath_hw *ah = sc->sc_ah;
  	struct ath_common *common = ath9k_hw_common(ah);
  	struct ieee80211_conf *conf = &hw->conf;
@@ -177,7 +193,7 @@
  	mutex_lock(&sc->mutex);
  
  	/*
-@@ -1608,16 +1551,8 @@ static int ath9k_config(struct ieee80211
+@@ -1618,16 +1568,8 @@ static int ath9k_config(struct ieee80211
  	 * of the changes. Likewise we must only disable the radio towards
  	 * the end.
  	 */
@@ -195,7 +211,7 @@
  
  	/*
  	 * We just prepare to enable PS. We have to wait until our AP has
-@@ -1742,19 +1677,13 @@ static int ath9k_config(struct ieee80211
+@@ -1752,19 +1694,13 @@ static int ath9k_config(struct ieee80211
  		ath_dbg(common, ATH_DBG_CONFIG,
  			"Set power: %d\n", conf->power_level);
  		sc->config.txpowlimit = 2 * conf->power_level;
diff --git a/package/mac80211/patches/561-ath9k_fix_flush.patch b/package/mac80211/patches/562-ath9k_fix_flush.patch
index df2089060..a5329adc9 100644
--- a/package/mac80211/patches/561-ath9k_fix_flush.patch
+++ b/package/mac80211/patches/562-ath9k_fix_flush.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -2251,9 +2251,6 @@ static void ath9k_flush(struct ieee80211
+@@ -2268,9 +2268,6 @@ static void ath9k_flush(struct ieee80211
  		return;
  	}
  
@@ -10,7 +10,7 @@
  	for (j = 0; j < timeout; j++) {
  		bool npend = false;
  
-@@ -2271,21 +2268,22 @@ static void ath9k_flush(struct ieee80211
+@@ -2288,21 +2285,22 @@ static void ath9k_flush(struct ieee80211
  		}
  
  		if (!npend)
diff --git a/package/mac80211/patches/562-ath9k_fix_led.patch b/package/mac80211/patches/562-ath9k_fix_led.patch
deleted file mode 100644
index 0ef16684b..000000000
--- a/package/mac80211/patches/562-ath9k_fix_led.patch
+++ /dev/null
@@ -1,30 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -1056,9 +1056,11 @@ static int ath9k_start(struct ieee80211_
- 		goto mutex_unlock;
- 	}
- 
--	ath9k_hw_cfg_output(ah, ah->led_pin,
--			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
--	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
-+	if (ah->led_pin >= 0) {
-+		ath9k_hw_cfg_output(ah, ah->led_pin,
-+				    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
-+		ath9k_hw_set_gpio(ah, ah->led_pin, 0);
-+	}
- 
- 	/*
- 	 * Reset key cache to sane defaults (all entries cleared) instead of
-@@ -1197,8 +1199,10 @@ static void ath9k_stop(struct ieee80211_
- 
- 	spin_lock_bh(&sc->sc_pcu_lock);
- 
--	ath9k_hw_set_gpio(ah, ah->led_pin, 1);
--	ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
-+	if (ah->led_pin >= 0) {
-+		ath9k_hw_set_gpio(ah, ah->led_pin, 1);
-+		ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
-+	}
- 
- 	ath_prepare_reset(sc, false, true);
- 
diff --git a/package/mac80211/patches/563-ath9k_fix_full_sleep_tx.patch b/package/mac80211/patches/563-ath9k_fix_full_sleep_tx.patch
deleted file mode 100644
index 17575b9e4..000000000
--- a/package/mac80211/patches/563-ath9k_fix_full_sleep_tx.patch
+++ /dev/null
@@ -1,22 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/main.c
-+++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -118,7 +118,7 @@ void ath9k_ps_restore(struct ath_softc *
- 	if (--sc->ps_usecount != 0)
- 		goto unlock;
- 
--	if (sc->ps_idle)
-+	if (sc->ps_idle && !(sc->ps_flags & PS_WAIT_FOR_TX_ACK))
- 		mode = ATH9K_PM_FULL_SLEEP;
- 	else if (sc->ps_enabled &&
- 		 !(sc->ps_flags & (PS_WAIT_FOR_BEACON |
---- a/drivers/net/wireless/ath/ath9k/xmit.c
-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
-@@ -1983,7 +1983,7 @@ static void ath_tx_complete(struct ath_s
- 		skb_pull(skb, padsize);
- 	}
- 
--	if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) {
-+	if ((sc->ps_flags & PS_WAIT_FOR_TX_ACK) && !txq->axq_depth) {
- 		sc->ps_flags &= ~PS_WAIT_FOR_TX_ACK;
- 		ath_dbg(common, ATH_DBG_PS,
- 			"Going back to sleep after having received TX status (0x%lx)\n",