From 9769854aaee74ec632ca54f22791e6696df7cda0 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Wed, 1 Jun 2011 13:12:31 +0000
Subject: mac80211: add initial support for AR9330

SVN-Revision: 27084
---
 ...xternal_reset-callback-to-ath9k_platfom_d.patch | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 package/mac80211/patches/570-ath9k-add-external_reset-callback-to-ath9k_platfom_d.patch

(limited to 'package/mac80211/patches/570-ath9k-add-external_reset-callback-to-ath9k_platfom_d.patch')

diff --git a/package/mac80211/patches/570-ath9k-add-external_reset-callback-to-ath9k_platfom_d.patch b/package/mac80211/patches/570-ath9k-add-external_reset-callback-to-ath9k_platfom_d.patch
new file mode 100644
index 0000000000..c5beaa0f95
--- /dev/null
+++ b/package/mac80211/patches/570-ath9k-add-external_reset-callback-to-ath9k_platfom_d.patch
@@ -0,0 +1,82 @@
+diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
+index 323b6ab..5d373fc 100644
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1161,6 +1161,41 @@ static bool ath9k_hw_set_reset(struct ath_hw *ah, int type)
+ 			rst_flags |= AR_RTC_RC_MAC_COLD;
+ 	}
+ 
++	if (AR_SREV_9330(ah)) {
++		int npend = 0;
++		int i;
++
++		/* AR9330 WAR:
++		 * call external reset function to reset WMAC if:
++		 * - doing a cold reset
++		 * - we have pending frames in the TX queues
++		 */
++
++		for (i = 0; i < AR_NUM_QCU; i++) {
++			npend = ath9k_hw_numtxpending(ah, i);
++			if (npend)
++				break;
++		}
++
++		if (ah->external_reset &&
++		    (npend || type == ATH9K_RESET_COLD)) {
++			int reset_err = 0;
++
++			ath_dbg(ath9k_hw_common(ah), ATH_DBG_RESET,
++				"reset MAC via external reset\n");
++
++			reset_err = ah->external_reset();
++			if (reset_err) {
++				ath_err(ath9k_hw_common(ah),
++					"External reset failed, err=%d\n",
++					reset_err);
++				return false;
++			}
++
++			REG_WRITE(ah, AR_RTC_RESET, 1);
++		}
++	}
++
+ 	REG_WRITE(ah, AR_RTC_RC, rst_flags);
+ 
+ 	REGWRITE_BUFFER_FLUSH(ah);
+diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
+index 8d9ac49..f29a806 100644
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -864,6 +864,7 @@ struct ath_hw {
+ 
+ 	bool is_clk_25mhz;
+ 	int (*get_mac_revision)(void);
++	int (*external_reset)(void);
+ };
+ 
+ struct ath_bus_ops {
+diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
+index 5ffabb9..f517649 100644
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -576,6 +576,7 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc, u16 subsysid,
+ 		sc->sc_ah->led_pin = pdata->led_pin;
+ 		ah->is_clk_25mhz = pdata->is_clk_25mhz;
+ 		ah->get_mac_revision = pdata->get_mac_revision;
++		ah->external_reset = pdata->external_reset;
+ 	}
+ 
+ 	common = ath9k_hw_common(ah);
+diff --git a/include/linux/ath9k_platform.h b/include/linux/ath9k_platform.h
+index c207607..6e3f54f 100644
+--- a/include/linux/ath9k_platform.h
++++ b/include/linux/ath9k_platform.h
+@@ -31,6 +31,7 @@ struct ath9k_platform_data {
+ 
+ 	bool is_clk_25mhz;
+ 	int (*get_mac_revision)(void);
++	int (*external_reset)(void);
+ };
+ 
+ #endif /* _LINUX_ATH9K_PLATFORM_H */
-- 
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