[PATCH] ipw2200: Enables the "slow diversity" algorithm
This forces one antenna or the other, if the background noise is
significantly quieter in one than the other. It favors the quieter
antenna, and won't kick in unless the difference is significant.
Signed-off-by: Cahill, Ben M <ben.m.cahill@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index 06909cb..954a095 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -9600,7 +9600,7 @@
sys_config->disable_unicast_decryption = 1;
sys_config->exclude_multicast_unencrypted = 0;
sys_config->disable_multicast_decryption = 1;
- sys_config->antenna_diversity = CFG_SYS_ANTENNA_BOTH;
+ sys_config->antenna_diversity = CFG_SYS_ANTENNA_SLOW_DIV;
sys_config->pass_crc_to_host = 0; /* TODO: See if 1 gives us FCS */
sys_config->dot11g_auto_detection = 0;
sys_config->enable_cts_to_self = 0;
diff --git a/drivers/net/wireless/ipw2200.h b/drivers/net/wireless/ipw2200.h
index d9f57f4..e8f1336 100644
--- a/drivers/net/wireless/ipw2200.h
+++ b/drivers/net/wireless/ipw2200.h
@@ -1895,6 +1895,7 @@
#define CFG_SYS_ANTENNA_BOTH 0x00 /* NIC selects best antenna */
#define CFG_SYS_ANTENNA_A 0x01 /* force antenna A */
#define CFG_SYS_ANTENNA_B 0x03 /* force antenna B */
+#define CFG_SYS_ANTENNA_SLOW_DIV 0x02 /* consider background noise */
/*
* The definitions below were lifted off the ipw2100 driver, which only
