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iwlwifi: include rssi as part of decision making for reduce txpower

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In bt coex, consider the average rssi as part of decision making process

Change-Id: I8d11d7f177a6875e2a9d08f7539d42253226fd7a
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Reviewed-on: http://git-mwg.jer.intel.com/gerrit/1945
Tested-by: Jenkins
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Wey-Yi Guy 2012-05-03 14:22:01 -07:00 committed by John W. Linville
parent f3a138c10b
commit dd551ab7b4
1 changed files with 11 additions and 0 deletions
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11
drivers/net/wireless/iwlwifi/iwl-agn-lib.c
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@ -31,6 +31,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <net/mac80211.h>
#include "iwl-dev.h"
#include "iwl-io.h"
@ -593,9 +594,18 @@ static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
struct iwl_bt_uart_msg *uart_msg)
{
bool need_update = false;
struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
int ave_rssi;
ave_rssi = ieee80211_ave_rssi(ctx->vif);
if (!ave_rssi) {
/* no rssi data, no changes to reduce tx power */
IWL_DEBUG_COEX(priv, "no rssi data available\n");
return need_update;
}
if (!priv->reduced_txpower &&
!iwl_is_associated(priv, IWL_RXON_CTX_PAN) &&
(ave_rssi > BT_ENABLE_REDUCED_TXPOWER_THRESHOLD) &&
(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |
BT_UART_MSG_FRAME3OBEX_MSK)) &&
!(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
@ -606,6 +616,7 @@ static bool iwlagn_fill_txpower_mode(struct iwl_priv *priv,
need_update = true;
} else if (priv->reduced_txpower &&
(iwl_is_associated(priv, IWL_RXON_CTX_PAN) ||
(ave_rssi < BT_DISABLE_REDUCED_TXPOWER_THRESHOLD) ||
(uart_msg->frame3 & (BT_UART_MSG_FRAME3SCOESCO_MSK |
BT_UART_MSG_FRAME3SNIFF_MSK | BT_UART_MSG_FRAME3A2DP_MSK)) ||
!(uart_msg->frame3 & (BT_UART_MSG_FRAME3ACL_MSK |