iwlwifi: add option to disalbe LED

Led has no use for some platform.
Add additional module parameter option to disable LED

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 7 insertions, 1 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 3e429a3e518d..90315c69cdf6 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -2097,7 +2097,7 @@ MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
 
 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
 MODULE_PARM_DESC(led_mode, "0=system default, "
-                "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
+                "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
 
 module_param_named(power_save, iwlagn_mod_params.power_save,
                 bool, S_IRUGO);
diff --git a/drivers/net/wireless/iwlwifi/iwl-led.c b/drivers/net/wireless/iwlwifi/iwl-led.c
index eca79087afb8..8761438f1532 100644
--- a/drivers/net/wireless/iwlwifi/iwl-led.c
+++ b/drivers/net/wireless/iwlwifi/iwl-led.c
@@ -177,6 +177,10 @@ void iwl_leds_init(struct iwl_priv *priv)
         int mode = iwlagn_mod_params.led_mode;
         int ret;
 
+        if (mode == IWL_LED_DISABLE) {
+                IWL_INFO(priv, "Led disabled\n");
+                return;
+        }
         if (mode == IWL_LED_DEFAULT)
                 mode = cfg(priv)->led_mode;
 
diff --git a/drivers/net/wireless/iwlwifi/iwl-shared.h b/drivers/net/wireless/iwlwifi/iwl-shared.h
index e406d49f4189..04975b7b65b3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-shared.h
+++ b/drivers/net/wireless/iwlwifi/iwl-shared.h
@@ -264,11 +264,13 @@ enum iwl_pa_type {
  *                      LED ON  = RF ON
  *                      LED OFF = RF OFF
  *    IWL_LED_BLINK:    adjust led blink rate based on blink table
+ *    IWL_LED_DISABLE:  led disabled
  */
 enum iwl_led_mode {
         IWL_LED_DEFAULT,
         IWL_LED_RF_STATE,
         IWL_LED_BLINK,
+        IWL_LED_DISABLE,
 };
 
 /**