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leds.c

/*
 * linux/arch/arm/mach-omap1/leds.c
 *
 * OMAP LEDs dispatcher
 */
#include <linux/kernel.h>
#include <linux/init.h>

#include <asm/leds.h>
#include <asm/mach-types.h>

#include <asm/arch/gpio.h>
#include <asm/arch/mux.h>

#include "leds.h"

static int __init
omap_leds_init(void)
{
      if (machine_is_omap_innovator())
            leds_event = innovator_leds_event;

      else if (machine_is_omap_h2()
                  || machine_is_omap_h3()
                  || machine_is_omap_perseus2())
            leds_event = h2p2_dbg_leds_event;

      else if (machine_is_omap_osk())
            leds_event = osk_leds_event;

      else
            return -1;

      if (machine_is_omap_h2()
                  || machine_is_omap_h3()
#ifdef      CONFIG_OMAP_OSK_MISTRAL
                  || machine_is_omap_osk()
#endif
                  ) {

            /* LED1/LED2 pins can be used as GPIO (as done here), or by
             * the LPG (works even in deep sleep!), to drive a bicolor
             * LED on the H2 sample board, and another on the H2/P2
             * "surfer" expansion board.
             *
             * The same pins drive a LED on the OSK Mistral board, but
             * that's a different kind of LED (just one color at a time).
             */
            omap_cfg_reg(P18_1610_GPIO3);
            if (omap_request_gpio(3) == 0)
                  omap_set_gpio_direction(3, 0);
            else
                  printk(KERN_WARNING "LED: can't get GPIO3/red?\n");

            omap_cfg_reg(MPUIO4);
            if (omap_request_gpio(OMAP_MPUIO(4)) == 0)
                  omap_set_gpio_direction(OMAP_MPUIO(4), 0);
            else
                  printk(KERN_WARNING "LED: can't get MPUIO4/green?\n");
      }

      leds_event(led_start);
      return 0;
}

__initcall(omap_leds_init);

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