From e6a62a6e5f352b8d6ffaa93e13a6ff7bdc7f07b2 Mon Sep 17 00:00:00 2001 From: Meenakshi Venkataraman Date: Tue, 13 Mar 2012 18:10:19 -0700 Subject: iwlwifi: move iwl_set_tx_power and make it static This function is used only in iwl-agn-rxon.c, move it there and mark it static. Move this function as part of iwl-core.c cleanup. Signed-off-by: Meenakshi Venkataraman Signed-off-by: Wey-Yi Guy --- drivers/net/wireless/iwlwifi/iwl-agn-rxon.c | 55 +++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) (limited to 'drivers/net/wireless/iwlwifi/iwl-agn-rxon.c') diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c index 18776ab44148..d2da1f3130c6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rxon.c @@ -407,6 +407,61 @@ static int iwlagn_rxon_disconn(struct iwl_priv *priv, return 0; } +static int iwl_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force) +{ + int ret; + s8 prev_tx_power; + bool defer; + struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS]; + + lockdep_assert_held(&priv->mutex); + + if (priv->tx_power_user_lmt == tx_power && !force) + return 0; + + if (tx_power < IWLAGN_TX_POWER_TARGET_POWER_MIN) { + IWL_WARN(priv, + "Requested user TXPOWER %d below lower limit %d.\n", + tx_power, + IWLAGN_TX_POWER_TARGET_POWER_MIN); + return -EINVAL; + } + + if (tx_power > priv->tx_power_device_lmt) { + IWL_WARN(priv, + "Requested user TXPOWER %d above upper limit %d.\n", + tx_power, priv->tx_power_device_lmt); + return -EINVAL; + } + + if (!iwl_is_ready_rf(priv)) + return -EIO; + + /* scan complete and commit_rxon use tx_power_next value, + * it always need to be updated for newest request */ + priv->tx_power_next = tx_power; + + /* do not set tx power when scanning or channel changing */ + defer = test_bit(STATUS_SCANNING, &priv->status) || + memcmp(&ctx->active, &ctx->staging, sizeof(ctx->staging)); + if (defer && !force) { + IWL_DEBUG_INFO(priv, "Deferring tx power set\n"); + return 0; + } + + prev_tx_power = priv->tx_power_user_lmt; + priv->tx_power_user_lmt = tx_power; + + ret = iwlagn_send_tx_power(priv); + + /* if fail to set tx_power, restore the orig. tx power */ + if (ret) { + priv->tx_power_user_lmt = prev_tx_power; + priv->tx_power_next = prev_tx_power; + } + return ret; +} + static int iwlagn_rxon_connect(struct iwl_priv *priv, struct iwl_rxon_context *ctx) { -- cgit v1.2.3