git diff da7fa2bb9e8bc763f0c7083d072f5c4e69c4b472..2b16ef924f6897e8a88b674b2d8fa5ce96444a25 drivers/input/misc/tri_state_key.c
diff --git a/drivers/input/misc/tri_state_key.c b/drivers/input/misc/tri_state_key.c
old mode 100755
new mode 100644
index fae2f49f..560f25d
--- a/drivers/input/misc/tri_state_key.c
+++ b/drivers/input/misc/tri_state_key.c
@@ -79,29 +79,39 @@ static int set_gpio_by_pinctrl(void)
 #endif
 static void switch_dev_work(struct work_struct *work)
 {
+
+       int key1,key2,key3;
        //pr_err("%s  gpio_get_value(%d)=%d\n",__func__,switch_data->key1_gpio,gpio_get_value(switch_data->key1_gpio));
        //pr_err("%s  gpio_get_value(%d)=%d\n",__func__,switch_data->key2_gpio,gpio_get_value(switch_data->key2_gpio));
        //pr_err("%s  gpio_get_value(%d)=%d\n",__func__,switch_data->key3_gpio,gpio_get_value(switch_data->key3_gpio));

       mutex_lock(&sem);
+       key1=gpio_get_value(switch_data->key1_gpio);
+       key2=gpio_get_value(switch_data->key2_gpio);
+       key3=gpio_get_value(switch_data->key3_gpio);

+       if(((key1==0)&&(key2==1)&&(key3==1))||((key1==1)&&(key2==0)&&(key3==1))||((key1==1)&&(key2==1)&&(key3==0)))
+       {
                //gpio_set_value(switch_data->key3_gpio,0);
                //pr_err("%s  gpio_22get_value(%d)=%d\n",__func__,switch_data->key3_gpio,gpio_get_value(switch_data->key3_gpio));
-               if(!gpio_get_value(switch_data->key2_gpio))
+               if(!key2)
                {
                    switch_set_state(&switch_data->sdev, MODE_DO_NOT_DISTURB);
                }

-               if(!gpio_get_value(switch_data->key3_gpio))
+               if(!key3)
                {
                    switch_set_state(&switch_data->sdev, MODE_NORMAL);
+
                }

-               if(!gpio_get_value(switch_data->key1_gpio))
+               if(!key1)
                {
                    switch_set_state(&switch_data->sdev, MODE_MUTE);
                }
+
         printk(KERN_ERR "%s ,tristatekey set to state(%d) \n",__func__,switch_data->sdev.state);
+       }
        mutex_unlock(&sem);
 }
 irqreturn_t switch_dev_interrupt(int irq, void *_dev)
@@ -426,8 +436,8 @@ static int tristate_dev_probe(struct platform_device *pdev)
             }

        }
-
-
+
+
         INIT_WORK(&switch_data->work, switch_dev_work);

         init_timer(&switch_data->s_timer);