gpio_led: add gpio_request to __led_init

This patch adds the gpio usage request. The polarity is changed to
positive as suggested by Mike Frysinger.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>

drivers/misc/gpio_led.c

@@ -2,26 +2,22 @@
  * Status LED driver based on GPIO access conventions of Linux
  *
  * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * Licensed under the GPL-2 or later.
  */
 
 #include <common.h>
 #include <status_led.h>
 #include <asm/gpio.h>
 
-/* assume led is active low */
-
 void __led_init(led_id_t mask, int state)
 {
-	gpio_direction_output(mask, (state == STATUS_LED_ON) ? 0 : 1);
+	gpio_request(mask, "gpio_led");
+	gpio_direction_output(mask, state == STATUS_LED_ON);
 }
 
 void __led_set(led_id_t mask, int state)
 {
-	gpio_set_value(mask, (state == STATUS_LED_ON) ? 0 : 1);
+	gpio_set_value(mask, state == STATUS_LED_ON);
 }
 
 void __led_toggle(led_id_t mask)