ar71xx/mac80211: add a workaround for the bad signal strength on the WNDR3700

SVN-Revision: 19565

package/mac80211/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2007-2009 OpenWrt.org
+# Copyright (C) 2007-2010 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
 PKG_NAME:=mac80211
 
 PKG_VERSION:=2010-02-02
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_SOURCE_URL:=http://mirror2.openwrt.org/sources
 #	http://www.orbit-lab.org/kernel/compat-wireless-2.6/2010/11 \
 #	http://wireless.kernel.org/download/compat-wireless-2.6

package/mac80211/patches/409-ath9k-add-wndr3700-antenna-initialization.patch

@@ -0,0 +1,76 @@
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -14,6 +14,7 @@
+  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+  */
+ 
++#include "linux/ath9k_platform.h"
+ #include "ath9k.h"
+ 
+ static char *dev_info = "ath9k";
+@@ -546,6 +547,8 @@ static int ath9k_init_softc(u16 devid, s
+ 	pdata = (struct ath9k_platform_data *) sc->dev->platform_data;
+ 	if (!pdata)
+ 		ah->ah_flags |= AH_USE_EEPROM;
++	else
++		sc->quirk_wndr3700 = pdata->quirk_wndr3700;
+ 
+ 	common = ath9k_hw_common(ah);
+ 	common->ops = &ath9k_common_ops;
+@@ -670,6 +673,24 @@ void ath9k_set_hw_capab(struct ath_softc
+ 	SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
+ }
+ 
++#ifdef CONFIG_ATHEROS_AR71XX
++static void wndr3700_init_antenna(struct ath_hw *ah)
++{
++	ath9k_hw_cfg_output(ah, 6, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
++	ath9k_hw_cfg_output(ah, 7, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
++	ath9k_hw_cfg_output(ah, 8, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
++	ath9k_hw_cfg_output(ah, 9, AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
++
++	/* select the first antenna group */
++	ath9k_hw_set_gpio(ah, 6, 0);
++	ath9k_hw_set_gpio(ah, 7, 1);
++	ath9k_hw_set_gpio(ah, 8, 0);
++	ath9k_hw_set_gpio(ah, 9, 1);
++}
++#else
++static inline void wndr3700_init_antenna(struct ath_hw *ah) {}
++#endif /* CONFIG_ATHEROS_AR71XX */
++
+ int ath9k_init_device(u16 devid, struct ath_softc *sc, u16 subsysid,
+ 		    const struct ath_bus_ops *bus_ops)
+ {
+@@ -688,6 +709,9 @@ int ath9k_init_device(u16 devid, struct 
+ 	common = ath9k_hw_common(ah);
+ 	ath9k_set_hw_capab(sc, hw);
+ 
++	if (sc->quirk_wndr3700)
++		wndr3700_init_antenna(ah);
++
+ 	/* Initialize regulatory */
+ 	error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
+ 			      ath9k_reg_notifier);
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -510,6 +510,8 @@ struct ath_softc {
+ 	struct ath_beacon_config cur_beacon_conf;
+ 	struct delayed_work tx_complete_work;
+ 	struct ath_btcoex btcoex;
++
++	unsigned long quirk_wndr3700:1;
+ };
+ 
+ struct ath_wiphy {
+--- a/include/linux/ath9k_platform.h
++++ b/include/linux/ath9k_platform.h
+@@ -24,6 +24,8 @@
+ struct ath9k_platform_data {
+ 	u16 eeprom_data[ATH9K_PLAT_EEP_MAX_WORDS];
+ 	u8 *macaddr;
++
++	unsigned long quirk_wndr3700:1;
+ };
+ 
+ #endif /* _LINUX_ATH9K_PLATFORM_H */

target/linux/ar71xx/files/arch/mips/ar71xx/dev-ap94-pci.c

@@ -1,7 +1,7 @@
 /*
  *  Atheros AP94 reference board PCI initialization
  *
- *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License version 2 as published
@@ -125,6 +125,12 @@ static void ap94_pci_fixup(struct pci_dev *dev)
 }
 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ap94_pci_fixup);
 
+void __init ap94_pci_enable_quirk_wndr3700(void)
+{
+	ap94_wmac0_data.quirk_wndr3700 = 1;
+	ap94_wmac1_data.quirk_wndr3700 = 1;
+}
+
 void __init ap94_pci_init(u8 *cal_data0, u8 *mac_addr0,
 			  u8 *cal_data1, u8 *mac_addr1)
 {

target/linux/ar71xx/files/arch/mips/ar71xx/dev-ap94-pci.h

@@ -1,7 +1,7 @@
 /*
  *  Atheros AP94 reference board PCI initialization
  *
- *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License version 2 as published
@@ -14,11 +14,14 @@
 #if defined(CONFIG_AR71XX_DEV_AP94_PCI)
 void ap94_pci_init(u8 *cal_data0, u8 *mac_addr0,
 		   u8 *cal_data1, u8 *mac_addr1) __init;
+
+void ap94_pci_enable_quirk_wndr3700(void) __init;
+
 #else
 static inline void ap94_pci_init(u8 *cal_data0, u8 *mac_addr0,
-				 u8 *cal_data1, u8 *mac_addr1)
-{
-}
+				 u8 *cal_data1, u8 *mac_addr1) {}
+
+static inline void ap94_pci_enable_quirk_wndr3700(void) {}
 #endif
 
 #endif /* _AR71XX_DEV_AP94_PCI_H */

target/linux/ar71xx/files/arch/mips/ar71xx/mach-wndr3700.c

@@ -2,7 +2,7 @@
  *  Netgear WNDR3700 board support
  *
  *  Copyright (C) 2009 Marco Porsch
- *  Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
  *
  *  This program is free software; you can redistribute it and/or modify it
  *  under the terms of the GNU General Public License version 2 as published
@@ -191,6 +191,7 @@ static void __init wndr3700_setup(void)
 	platform_device_register(&wndr3700_rtl8366s_device);
 	platform_device_register_simple("wndr3700-led-usb", -1, NULL, 0);
 
+	ap94_pci_enable_quirk_wndr3700();
 	ap94_pci_init(art + WNDR3700_CALDATA0_OFFSET,
 		      art + WNDR3700_WMAC0_MAC_OFFSET,
 		      art + WNDR3700_CALDATA1_OFFSET,

target/linux/ar71xx/files/include/linux/ath9k_platform.h

@@ -16,6 +16,8 @@
 struct ath9k_platform_data {
 	u16 eeprom_data[ATH9K_PLAT_EEP_MAX_WORDS];
 	u8 *macaddr;
+
+	unsigned long quirk_wndr3700:1;
 };
 
 #endif /* _LINUX_ATH9K_PLATFORM_H */