iwlwifi: add possibility to disable tx_power calibration

This patch adds the possibility to disable the tx_power calibration.
In 5000 HW, this calibration is implemented in uCode, hence, it is
disabled in driver by default.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

5 files changed, 14 insertions, 2 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index be6b6ebc6bf8..6d249bbd7950 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -2103,8 +2103,9 @@ void iwl4965_hw_rx_statistics(struct iwl_priv *priv,
         priv->temperature = temp;
         set_bit(STATUS_TEMPERATURE, &priv->status);
 
-        if (unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
-                     iwl4965_is_temp_calib_needed(priv))
+        if (!priv->disable_tx_power_cal &&
+             unlikely(!test_bit(STATUS_SCANNING, &priv->status)) &&
+             iwl4965_is_temp_calib_needed(priv))
                 queue_work(priv->workqueue, &priv->txpower_work);
 }
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index fc8ad7326edd..31ea363c62c7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -1229,6 +1229,12 @@ static u16 iwl5000_get_hcmd_size(u8 cmd_id, u16 len)
         return len;
 }
 
+static void iwl5000_setup_deferred_work(struct iwl_priv *priv)
+{
+        /* in 5000 the tx power calibration is done in uCode */
+        priv->disable_tx_power_cal = 1;
+}
+
 static void iwl5000_rx_handler_setup(struct iwl_priv *priv)
 {
         /* init calibration handlers */
@@ -1313,6 +1319,7 @@ static struct iwl_lib_ops iwl5000_lib = {
         .txq_inval_byte_cnt_tbl = iwl5000_txq_inval_byte_cnt_tbl,
         .txq_set_sched = iwl5000_txq_set_sched,
         .rx_handler_setup = iwl5000_rx_handler_setup,
+        .setup_deferred_work = iwl5000_setup_deferred_work,
         .is_valid_rtc_data_addr = iwl5000_hw_valid_rtc_data_addr,
         .load_ucode = iwl5000_load_ucode,
         .init_alive_start = iwl5000_init_alive_start,
diff --git a/drivers/net/wireless/iwlwifi/iwl-debug.h b/drivers/net/wireless/iwlwifi/iwl-debug.h
index 48563a07795a..58384805a494 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debug.h
+++ b/drivers/net/wireless/iwlwifi/iwl-debug.h
@@ -57,6 +57,7 @@ struct iwl_debugfs {
         struct dir_rf_files {
                 struct dentry *file_disable_sensitivity;
                 struct dentry *file_disable_chain_noise;
+                struct dentry *file_disable_tx_power;
         } dbgfs_rf_files;
         u32 sram_offset;
         u32 sram_len;
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index da6dcb20b5e8..ed948dc59b3d 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -388,6 +388,7 @@ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
         DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal);
         DEBUGFS_ADD_BOOL(disable_chain_noise, rf,
                          &priv->disable_chain_noise_cal);
+        DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal);
         return 0;
 
 err:
@@ -415,6 +416,7 @@ void iwl_dbgfs_unregister(struct iwl_priv *priv)
         DEBUGFS_REMOVE(priv->dbgfs->dir_data);
         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity);
         DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise);
+        DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power);
         DEBUGFS_REMOVE(priv->dbgfs->dir_rf);
         DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
         kfree(priv->dbgfs);
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 9e5a7cddf146..bf4b8831c0a7 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -1204,6 +1204,7 @@ struct iwl_priv {
         struct work_struct txpower_work;
         u32 disable_sens_cal;
         u32 disable_chain_noise_cal;
+        u32 disable_tx_power_cal;
         struct work_struct run_time_calib_work;
         struct timer_list statistics_periodic;
 }; /*iwl_priv */