arch/arm/mach-omap/leds.c

   1 /*
   2  * linux/arch/arm/mach-omap/leds.c
   3  *
   4  * OMAP LEDs dispatcher
   5  */
   6 #include <linux/kernel.h>
   7 #include <linux/init.h>
   8
   9 #include <asm/leds.h>
  10 #include <asm/mach-types.h>
  11
  12 #include <asm/arch/gpio.h>
  13 #include <asm/arch/mux.h>
  14
  15 #include "leds.h"
  16
  17 static int __init
  18 omap_leds_init(void)
  19 {
  20         if (machine_is_omap_innovator())
  21                 leds_event = innovator_leds_event;
  22
  23         else if (machine_is_omap_h2() || machine_is_omap_perseus2())
  24                 leds_event = h2p2_dbg_leds_event;
  25
  26         else if (machine_is_omap_osk())
  27                 leds_event = osk_leds_event;
  28
  29         else
  30                 return -1;
  31
  32         if (machine_is_omap_h2()
  33                         || machine_is_omap_perseus2()
  34                         || machine_is_omap_osk()) {
  35
  36                 /* LED1/LED2 pins can be used as GPIO (as done here), or by
  37                  * the LPG (works even in deep sleep!), to drive a bicolor
  38                  * LED on the H2 sample board, and another on the H2/P2
  39                  * "surfer" expansion board.
  40                  *
  41                  * The same pins drive a LED on the OSK Mistral board, but
  42                  * that's a different kind of LED (just one color at a time).
  43                  */
  44                 omap_cfg_reg(P18_1610_GPIO3);
  45                 if (omap_request_gpio(3) == 0)
  46                         omap_set_gpio_direction(3, 0);
  47                 else
  48                         printk(KERN_WARNING "LED: can't get GPIO3/red?\n");
  49
  50                 omap_cfg_reg(MPUIO4);
  51                 if (omap_request_gpio(OMAP_MPUIO(4)) == 0)
  52                         omap_set_gpio_direction(OMAP_MPUIO(4), 0);
  53                 else
  54                         printk(KERN_WARNING "LED: can't get MPUIO4/green?\n");
  55         }
  56
  57         leds_event(led_start);
  58         return 0;
  59 }
  60
  61 __initcall(omap_leds_init);