karo: tx28: enable activity led only on stk5-v3 baseboard

diff --git a/board/karo/tx28/tx28.c b/board/karo/tx28/tx28.c
index 4f524b4ad5771e6bc78784a670e288d3cbc93f6a..f1fca4a17a229438ccc9ed2de77161049c3605b5 100644 (file)
--- a/board/karo/tx28/tx28.c
+++ b/board/karo/tx28/tx28.c
@@ -362,14 +362,18 @@ enum {
        LED_STATE_INIT = -1,
        LED_STATE_OFF,
        LED_STATE_ON,
+       LED_STATE_DISABLED,
 };
 
+static int led_state = LED_STATE_DISABLED;
+
 void show_activity(int arg)
 {
-       static int led_state = LED_STATE_INIT;
        static ulong last;
 
-       if (led_state == LED_STATE_INIT) {
+       if (led_state == LED_STATE_DISABLED) {
+               return;
+       } else if (led_state == LED_STATE_INIT) {
                last = get_timer(0);
                gpio_set_value(TX28_LED_GPIO, 1);
                led_state = LED_STATE_ON;
@@ -378,10 +382,11 @@ void show_activity(int arg)
                        last = get_timer(0);
                        if (led_state == LED_STATE_ON) {
                                gpio_set_value(TX28_LED_GPIO, 0);
+                               led_state = LED_STATE_OFF;
                        } else {
                                gpio_set_value(TX28_LED_GPIO, 1);
+                               led_state = LED_STATE_ON;
                        }
-                       led_state = 1 - led_state;
                }
        }
 }
@@ -819,6 +824,7 @@ static void stk5_board_init(void)
 
 static void stk5v3_board_init(void)
 {
+       led_state = LED_STATE_INIT;
        stk5_board_init();
 }