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

[openwrt-10.03/.git] / package / mac80211 / patches / 409-ath9k-add-wndr3700-antenna-initialization.patch

diff --git a/package/mac80211/patches/409-ath9k-add-wndr3700-antenna-initialization.patch b/package/mac80211/patches/409-ath9k-add-wndr3700-antenna-initialization.patch
new file mode 100644 (file)
index 0000000..98c9891
--- /dev/null
+++ b/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 */